List of colossal squid specimens and sightings

Last updated

Colossal squid sighted near the Ross Ice Shelf on 8 January 2007 (#18 on this list). The animal is seen here with its limbs wrapped around a Patagonian toothfish caught on a longline. Note the orange-red skin and the single arm extended above the water's surface, displaying the hooked medial suckers that are the source of the generic name Mesonychoteuthis (meso- = middle, onycho- = nail, claw). Mesonychoteuthis hamiltoni January 8 2007.jpg
Colossal squid sighted near the Ross Ice Shelf on 8 January 2007 (#18 on this list). The animal is seen here with its limbs wrapped around a Patagonian toothfish caught on a longline. Note the orange-red skin and the single arm extended above the water's surface, displaying the hooked medial suckers that are the source of the generic name Mesonychoteuthis ( meso- = middle, onycho- = nail, claw).

This list of colossal squid specimens and sightings is a timeline of recorded human encounters with members of the genus Mesonychoteuthis , popularly known as colossal squid. It includes animals that were caught by fishermen, recovered (in whole or in part) from sperm whales and other predatory species, as well as those reliably sighted at sea. The list also covers specimens misidentified as colossal squid.

Contents

Background

List of colossal squid specimens and sightings
Published coordinates of colossal squid specimens (may be subject to significant rounding error)
Download coordinates as: KML

The colossal squid (Mesonychoteuthis hamiltoni), which has a circum-Antarctic distribution in the Southern Ocean, is far less known than the distantly related, near-cosmopolitan giant squid (Architeuthis dux). Though a substantial number of colossal squid specimens have been recorded, the vast majority of these are only fragmentary remains such as disarticulated beaks. Xavier et al. (1999) collated 188 geographical positions for whole or partial specimens caught by commercial and scientific fisheries, but very few mature animals have ever been documented. O'Shea & Bolstad (2008) found 11 reports in which adult or subadult specimens had been described, and mentioned that at least 7 additional, "similarly sized" specimens were known to them; McClain et al. (2015) stated that only 12 "complete" specimens were known.

Colossal squid caught off South Georgia Island on 25 June 2005 (#17), possibly the first to be filmed alive. Note the uniformly dark skin pigmentation in contrast to the 2008 specimen. Colossal Squid South Georgia.jpg
Colossal squid caught off South Georgia Island on 25 June 2005 (#17), possibly the first to be filmed alive. Note the uniformly dark skin pigmentation in contrast to the 2008 specimen.

Early specimens

The earliest known specimens of this species are two brachial crowns (#1) recovered from the stomach of a sperm whale in the winter of 1924–1925, on the basis of which Guy Coburn Robson formally described Mesonychoteuthis hamiltoni in 1925. [1] Apart from two partial specimens (#2 and 3) recovered from sperm whale stomachs in the mid-1950s—initially misidentified as belonging to the giant squid genus, Architeuthis [2] —and a single juvenile individual of 86 mm (3.4 in) mantle length (#4), [3] little else was known about the species until additional specimens began receiving coverage in Russian-language scientific journals in the 1970s. [4] In 1981, a Soviet trawler operating off Dronning Maud Land, Antarctica, retrieved a complete specimen (#9) with a mantle length of 2.42 m (7.9 ft) and total length of 5.1 m (17 ft) from a depth of 750–770 m, which was later identified as an immature female of M. hamiltoni. [5]

Emergence from obscurity

It would be more than two decades before another giant individual was collected: [6] in March 2003, a complete specimen of a subadult female (#14) was found near the surface in the Ross Sea. It weighed some 300 kg (660 lb), with a total length of around 5.4 m (18 ft) and mantle length of 2.5 m (8.2 ft). [7] It was this specimen that led teuthologist Steve O'Shea to coin the common name "colossal squid". [8] A much smaller immature female (#15) was taken by trawl at 1,143 m (3,750 ft) depth off Macquarie Island the same year. [9] On 25 June 2005, a specimen was captured alive at a depth of 1,625 m (5,331 ft) while taking Patagonian toothfish from a longline in South Georgian waters (#17). Although the heavy mantle could not be brought aboard, the total length was estimated at around 5 m (16 ft) and the animal is thought to have weighed between 150 and 200 kg (330 and 440 lb). [10] It was filmed alive at the surface. [11]

Largest known specimen

The giant specimen filmed at the surface in the D'Urville Sea in January 2008 (#21). Note the greatly distended mantle and oversized fins. The animal turned maroon upon being pulled to the surface, but soon returned to the pale pink seen here. It has been suggested that this might be the animal's typical colouration, with the more commonly seen reddish tones representing a stress response. Live colossal squid at surface January 2008.jpg
The giant specimen filmed at the surface in the D'Urville Sea in January 2008 (#21). Note the greatly distended mantle and oversized fins. The animal turned maroon upon being pulled to the surface, but soon returned to the pale pink seen here. It has been suggested that this might be the animal's typical colouration, with the more commonly seen reddish tones representing a stress response.

The largest known complete specimen of the colossal squid—and the heaviest recorded extant cephalopod—was a mature female (#19) captured in the Ross Sea in February 2007. Its weight was initially estimated at 450 kg (990 lb), its mantle length at 4 m (13 ft), and its total length at 8–10 m (26–33 ft). [15] Once completely thawed the specimen was found to weigh 495 kg (1,091 lb), but to measure only 2.5 m (8.2 ft) in mantle length and 4.2 m (14 ft) in total length. [16] [nb 2] It is likely that the specimen, and particularly its tentacles, shrank considerably post mortem as a result of dehydration, having been kept in a freezer for 14 months. [nb 3] Both this and the 2003 specimen received significant media attention and did much to bring the species to public prominence; the following years saw a number of individuals of the more commonly encountered giant squid misidentified as colossal squid (e.g. #[1] and [2]).

Later developments

Perhaps the best video of a live colossal squid is that of an animal (#21) recorded at the surface in the D'Urville Sea off Antarctica in January 2008. [21] The squid was pulled to the surface feeding on a line-caught toothfish. The video is likely the first to show a colossal squid swimming freely, and records the animal performing a slow roll on its longitudinal axis. Initially light-coloured, the squid quickly turned blood red (possibly a stress response) before returning to a light pink after lingering at the surface for a short time, thence slowly retreated to deeper water. [22]

Another giant specimen, a female measuring 3.5 m (11 ft) in total length and weighing 350 kg (770 lb), was recovered intact in 2014 (#27). It had eyes 37 cm (15 in) across—the largest ever recorded. [23] Its 3.5-hour dissection at the Museum of New Zealand Te Papa Tongarewa was live streamed on YouTube. [24]

Since then, several more colossal squid have been filmed or photographed alive at the surface. But as far as is publicly known, the colossal squid has never been observed alive in its natural, deep-water habitat, although a number of such recordings of the giant squid have been made in recent years. [25] As such, it is the only known extant species of truly giant (>50 kg [110 lb]) cephalopod that has never been filmed in its natural habitat. [nb 4]

List of colossal squid

Records are listed chronologically in ascending order and numbered accordingly. This numbering is not meant to be definitive but rather to provide a convenient means of referring to individual records. Specimens incorrectly identified as colossal squid are counted separately, their numbers enclosed in square brackets, and are highlighted in pink ( ). Records that cover multiple colossal squid specimens, or remains of more than a single animal (e.g. two lower beaks), have the 'Material cited' cell highlighted in grey ( ). Animals that were photographed or filmed while alive are highlighted in yellow ( ). Where a record falls into more than one of these categories, a combination of shadings is used. Where an image of a specimen is available this is indicated by a camera symbol (📷) that links to the image.

Beak of a colossal squid from the Amundsen Sea off Antarctica. Being more-or-less indigestible, beaks are often the only identifiable colossal squid remains found in the stomachs of predatory species such as sperm whales. The colossal squid has the largest beak among living cephalopods, with a lower rostral length around twice that of the giant squid. Mesonychoteuthis hamiltoni beak.jpg
Beak of a colossal squid from the Amundsen Sea off Antarctica. Being more-or-less indigestible, beaks are often the only identifiable colossal squid remains found in the stomachs of predatory species such as sperm whales. The colossal squid has the largest beak among living cephalopods, with a lower rostral length around twice that of the giant squid.
#DateLocationNature of encounterIdentificationMaterial citedMaterial savedSexSize and measurementsRepositoryMain referencesAdditional referencesNotes
1winter of 1924–192550 mi (80 km) north of Smith Island, South Shetland From sperm whale stomachMesonychoteuthis hamiltoni Robson, 1925Two arm (brachial) crownsEntireBMNH 1926.3.31.28; syntypes of Mesonychoteuthis hamiltoni Robson, 1925 Robson (1925:272, figs. 1–2); Lipiński et al. (2000:107) Sweeney & Young (2003); O'Shea & Bolstad (2008); Sweeney (2017:[31])
21956/1957 South Orkney Islands ( 59°41′S44°14′W / 59.683°S 44.233°W / -59.683; -44.233 (Colossal squid specimen, 1956/1957) )
{SWA}
From sperm whale stomachArchiteuthis sp.; Mesonychoteuthis hamiltoni Robson, 1925Head and mantle UndeterminedHL: 30 cm; HW: 20 cm; ED: 16–17 cm; ?WL: ~12 m Korabelnikov (1959:103); Yukhov (1974:62) Sweeney & Roper (2001:[56]) Initial identification by I.I. Akimushkin. From 15.8 m long male sperm whale.
31956/1957 South Shetland Islands ( 61°56′S52°39′W / 61.933°S 52.650°W / -61.933; -52.650 (Colossal squid specimen, 1956/1957) )
{SWA}
From sperm whale stomachArchiteuthis sp.; Mesonychoteuthis hamiltoni Robson, 1925Fin onlyUndeterminedFL: 41 cm; FW: 48 cm; ?WL: ~10 m Korabelnikov (1959:103); Yukhov (1974:62) Sweeney & Roper (2001:[56]) Initial identification by I.I. Akimushkin. From 15 m long male sperm whale.
41970 (reported)Mesonychoteuthis hamiltoniEntireEntire?(juvenile)ML: 86 mm McSweeny (1970); Voss (1980:395, figs. 10b,d) Clarke (1986:199); O'Shea & Bolstad (2008); Young & Mangold (2019, 2 figs.) Juvenile specimen. Upper and lower beaks described and illustrated.
51975 (reported)Mesonychoteuthis hamiltoni"large specimen"; ML unknown Klumov & Yukhov (1975) Clarke (1986:199) Upper and lower beaks described and illustrated.
61980 (reported)From sperm whale stomachMesonychoteuthis hamiltoniEntire; "nearly complete", inner organs missingEntire?Female (subadult)ML: 125 cm Voss (1980:394, fig. 10a) O'Shea & Bolstad (2008); Young & Mangold (2019, fig.)
71980 (reported)Mesonychoteuthis hamiltoniEntireEntire?(larva)ML: 23 mm Voss (1980:395, fig. 10c) Young & Mangold (2019, fig.) Advanced paralarva.
81980 (reported)From sperm whale stomach(s)Mesonychoteuthis hamiltoniSeveral partial specimensEntire"large"NMNH Voss (1980:394) O'Shea & Bolstad (2008) One specimen a mature male. Brachial crowns according to O'Shea & Bolstad (2008).
9
(📷)
March 1981 Lazarev Sea, off Dronning Maud Land, Antarctic at 750–770 m depthBy trawlMesonychoteuthis hamiltoniEntireFemale (immature)ML: 2.42 m; EL: 5.1 m Remeslo (2011); Remeslo (2014, figs. 1–4) Ellis (1998:147, fig.) Caught by Soviet trawler Eureka (Эврика). Photographed on deck by Alexander Remeslo.
1982 (reported)Not givenNot givenMesonychoteuthisNot givenTransverse slice of gladius ML: "at least" 5 m [estimate] Wood (1982:191) Bright (1989:146) Wood (1982:191) provided the following details: "Dr Anna M Bidder (pers. comm.) of the Department of Zoology at Cambridge University, possesses a transverse slice of the pen of another Mesonychoteuthis which, judging by its width, must have come from a cranchid [ sic ] measuring at least 5 m [16 ft] in mantle length." The same information is summarised by Bright (1989:146).
101985 (reported)at 2000–2200 m depthTrawled in opening-closing net (RMT8)Mesonychoteuthis hamiltoniEntire?ML: 1.05 m Rodhouse & Clarke (1985) O'Shea & Bolstad (2008)
111986 (reported)( 47°51′S40°01′W / 47.850°S 40.017°W / -47.850; -40.017 (Colossal squid specimen, 1986 (reported)) , WH 101 I/76)Mesonychoteuthis hamiltoniLower beakEntire?Female (juvenile)LRL: 7.10 mm; ML: 225.0 mm Clarke (1986:200, fig. A)
121986 (reported) S. Georgia From sperm whale stomachMesonychoteuthis hamiltoniLower beakEntire?LRL: 13.50 mm Clarke (1986:200, fig. B)
131986 (reported) S. Georgia From sperm whale stomachMesonychoteuthis hamiltoniLower beakEntire?LRL: 20.40 mm Clarke (1986:200, fig. C)
14
(📷)
March 2003 Ross Sea Found floating at surface, deadMesonychoteuthis hamiltoniEntire; recovered in three pieces, later reassembledEntireFemale (subadult)ML: ~2.5 m; WL: ~5.4 m; LRL: 37/38 mm; WT: ~300 kgNMNZ Griggs (2003); Owen (2003); Hoff (2003:86); O'Shea & Bolstad (2008) Numerous media sources; Remeslo (2011); Remeslo (2014); McClain et al. (2015); Young & Mangold (2019, fig.) Examined at the Museum of New Zealand Te Papa Tongarewa by Steve O'Shea and Kat Bolstad, which led them to coin the name "colossal squid" for the species. [29]
15
(📷)
2003between Macquarie Island and Stewart Island, ~140 nmi (260 km) south of New Zealand waters ( 53°49.30′S159°04.44′E / 53.82167°S 159.07400°E / -53.82167; 159.07400 (Colossal squid specimen, 2003) ), at 1143 m depth
{SWP}
By trawlMesonychoteuthis hamiltoniEntireEntireFemale (immature)ML: 0.9 m [when fresh] Young (2003b); Wassilieff & O'Shea (2006); O'Shea & Bolstad (2008); [SeaPics] (N.d.) Examined by Steve O'Shea (see also medial arm suckers).
162004 (reported)"in upper slope waters of the Kerguelen Archipelago"From stomach contents of 22 sleeper sharks ( Somniosus pacificus )Mesonychoteuthis hamiltoni89 beaks; 42 lower, 47 upper (minimum number of individuals: 49)EntireLRL: 10.1–38.8 mm; LRL: 22.3 mm ±7.2 [average]; ML: 61–237 cm [estimate]; ML: 136 cm ±44 [average]; WT: 2.1–91.2 kg [estimate]; WT: 24.4 kg ±22.1 [average] Cherel & Duhamel (2004) M. hamiltoni beaks were found in 61.1% (22/36) of sleeper sharks examined. Beaks of this species accounted for 16.1% (89/553) of total recovered cephalopod beaks. M. hamiltoni accounted for 52.0% (1133621/2180535 g) of total reconstituted cephalopod biomass.
17
(📷)
25 June 2005"South Georgia waters" at 1625 m depthCaught by long-lining fishing vessel targeting Patagonian toothfish; filmed and photographed alive at surfaceMesonychoteuthis hamiltoniEntire; aliveHead with tentacles and arms; mantle too heavy to bring aboardWL: ~5 m [estimate]; WT: 150–200 kg [estimate] [Anonymous] (2005); O'Shea (2005) Caught by longliner Isla Santa Clara. Five men, including the ship's scientific observer, attempted to bring the squid aboard. Paul McCarthy, the scientific observer, estimated the length and weight of the squid. Specimen was sent to King Edward Point (KEP) Scientists for formal identification. Filmed at the surface by Ramon Ferreira Gomez; possibly first colossal squid to be filmed alive.
18
(📷)
8 January 2007near Ross Ice Shelf
{SWP}
Caught by long-lining fishing vessel targeting Patagonian toothfish; photographed alive at surfaceMesonychoteuthis hamiltoniEntire; aliveNone?ML: 12–14 ft (3.7–4.3 m) [estimate?] [Anonymous] (2007a, 3 figs.); Clem (2007, 3 figs.) Photographed alive in the water holding onto a Patagonian toothfish.
19
(📷)
"early February" (captured); 22 February 2007 (reported) Ross Sea
{SWP}
Caught while fishing for Antarctic toothfish; filmed and photographed alive at surfaceMesonychoteuthis hamiltoniEntire; aliveEntireFemaleEL: 10 m [initial estimate]; EL: 4.2 m [after thawing]; ML: ~2.5 m; LRL: 41/42.5 mm; EyD: 30–40 cm [estimate]; EyD: 27 cm [after thawing]; LD: 12 cm; WT: 495 kgNMNZ Anderton (2007); [Anonymous] (2007b); Griggs (2007); [Anonymous] (2007c); Black (2008); Atkinson (2008b); extensive official online coverage ([Te Papa], 2008a–v); Mackenzie (2019) Numerous media sources and website; McClain et al. (2015); Joseph (2016:476, fig. 8.24a); Cleal (2020:[16]) On public display. First mature specimen ever recovered and largest extant cephalopod scientifically documented. Caught by New Zealand (Sanford Ltd.) vessel San Aspiring while fishing for Antarctic toothfish. Filmed alive at surface. Placed in cargo net and brought aboard using crane (see video). Weight initially estimated at 450 kg, mantle length at 4 m, and total length at 8–10 m. Tentacles and eyes shrunk considerably post mortem. Thawed and examined by Steve O'Shea, Kat Bolstad, and Tsunemi Kubodera at Museum of New Zealand Te Papa Tongarewa. Featured in Discovery Channel program "Colossal Squid" (see clip). Most popular exhibit at Museum of New Zealand Te Papa Tongarewa. [30] Featured in Whiti: Colossal Squid of the Deep, [31] winner of 2021 Whitley Award for Best Children's Book. [32]
2028 May 2007 (reported) New Zealand?
{SWP}
From a research cruiseMesonychoteuthis hamiltoniTwo tentaclesML: 2 m [estimate] Bolstad (2007)
21
(📷)
January 2008 D'Urville Sea, off Antarctica Filmed alive at surface feeding on toothfish, which it released after being prodded with long pole; changed colour while lingering at surface, before slowly retreating to deeper waterMesonychoteuthis hamiltoniEntireNoneEstimates by eye-witness Alexander Vagin, quoted in [Anonymous] (2013): ML: ~4 m; MW: ≥0.5 m; WL: >5 m [Anonymous] (2013); Garland (2015); Bühler (2015); Millner (2015); Farquhar (2015); Mills (2015); Strege (2015) Young & Mangold (2019) Seen alive at surface by Russian scientists (including Ivan Istomin and Alexander Vagin) on South Korean research vessel during mission to study toothfish; filmed by Istomin. Recorded in 2008 but only made public in 2013; widely reported in English-language media only in 2015. Specimen pulled from depths feeding on line-caught toothfish. Video shows squid changing colour from initial deep red (possibly a stress response) to light pink. Widely misreported as "giant squid". [33]
2220 March 2008 (reported) Ross Sea
{SWP}
Caught by New Zealand research vessel Tangaroa"colossal squid"Several specimensJuvenile Atkinson (2008a)
[1]25 May 2008about 40 km off Portland, Victoria, Australia, at 556 m depth
{SWP}
Caught by trawler Zeehaan"colossal squid"; "giant squid"Entire; eyes, skin and fins intactEntireFemaleEL: >12 m [intact estimate]; ?EL: 5.5–6 m; WT: 245 kg Melbourne Museum, Museum Victoria Burgess (2008); [Anonymous] (2008a); [Anonymous] (2008b); McNamara (2008); [Anonymous] (2008c); [Anonymous] (2008d) Non-mesonychoteuthid. Misidentified as a "colossal squid" in some media reports. Reportedly largest recorded giant squid specimen from Australian waters. Capture of squid described by skipper Rangi Pene. Public dissection took place at Melbourne Museum on 17 July 2008, carried out by team of experts led by Mark Norman.
232009 (reported) Kerguelen waters
{SIO}
Found in stomach contents of sleeper shark ( Somniosus sp.)Mesonychoteuthis hamiltoniLower beakEntire(adult)LRL: 23.6 mm Xavier & Cherel (2009:55, fig. 10)
242009 (reported) Kerguelen waters
{SIO}
Found in stomach contents of sleeper shark ( Somniosus sp.)Mesonychoteuthis hamiltoniLower beakEntire(juvenile)LRL: 10.4 mm Xavier & Cherel (2009:56, fig. 10)
252009 (reported) Kerguelen waters
{SIO}
Found in stomach contents of sleeper shark ( Somniosus sp.)Mesonychoteuthis hamiltoniUpper beakEntireURL: 27.7 mm Xavier & Cherel (2009:86, fig. 10)
[2]7 August 2010 (morning) Houghton Bay, Wellington, New Zealand
{SWP}
Found washed ashore in stormwater channel, dead"colossal squid"; "giant squid"Entire; "in bad shape"Beak; other remains left to the elements, washed out to sea around 3 pm?EL: 3.5–4 m [estimate; "small"]NMNZ Harvey (2010); [Anonymous] (2010); Pollock (2010) Non-mesonychoteuthid. Initially identified as a colossal squid by Department of Conservation Wellington area manager, Rob Stone. Correct identification by Te Papa communications manager, Jane Kieg. Te Papa only interested in beak for examination due to poor condition of specimen; probably attacked at sea.
26
(📷)
2 April 2012 (reported; found in previous week)off Portland, Victoria, Australia
{SWP}
Found floating at surface, dead"colossal type [squid]"Entire??ML: ~2 m ["body"]; ?MW: ~1 m; WT: 120 kg Collins (2012) Found by local fisherman and boat operator Bob McPherson while fishing for tuna in waters 700 m deep.
27
(📷)
mid-2014 Ross Sea at 1200–1800 m depth
{SWP}
Caught by New Zealand (Sanford Ltd.) vessel San Aspiring while fishing for Patagonian toothfish "colossal squid"Entire; tentacles missingEntireFemaleEL: 3.5 m; WT: 350 kg; EyD: 35/37 cmNMNZ Bryner (2014); Farquhar (2014); Feltman (2014); extensive official online coverage ([Te Papa], 2014a–f) Numerous media sourcesDissected on 16 September 2014 (eye lens and buccal mass removed); caught "a couple of months" earlier. Dissection led by Kat Bolstad and carried out by staff of Museum of New Zealand Te Papa Tongarewa with help of Auckland University of Technology (including post-graduate researcher Aaron Boyd Evans). Eggs found in mantle. Dissection live streamed on YouTube for 3.5 hours.
28
(📷)
2015 Ross Sea CaughtMesonychoteuthisEntire; "very good condition"Entire(juvenile)?EL: ~12 cmNMNZ [NIWA] (2015); [Anonymous] (2015) Collected by NIWA during the New Zealand–Australia Antarctic Ecosystems Voyage (29 January – 11 March 2015). Frozen on board ship; later examined at the Museum of New Zealand Te Papa Tongarewa by Kat Bolstad and Aaron Boyd Evans. Characteristic hook and sucker combination already discernible on arms.

Abbreviations

The 495-kilogram (1,091 lb) colossal squid on display at the Museum of New Zealand Te Papa Tongarewa (#19). It is the most massive extant cephalopod on record. NZ070415 Colossal Squid 01.jpg
The 495-kilogram (1,091 lb) colossal squid on display at the Museum of New Zealand Te Papa Tongarewa (#19). It is the most massive extant cephalopod on record.

The following abbreviations are used in the List of colossal squid table.

Oceanic sectors

M. hamiltoni has a circumpolar Antarctic distribution.

  • SWA, Southwest Atlantic Ocean
  • SEA, Southeast Atlantic Ocean
  • SWP, Southwest Pacific Ocean
  • SEP, Southeast Pacific Ocean
  • SIO, Southern Indian Ocean

Measurements

Abbreviations used for measurements and counts are based on standardised acronyms in teuthology, primarily those defined by Roper & Voss (1983), with the exception of several found in older references.

  • ED, egg diameter
  • EL, "entire" length (end of tentacle(s), often stretched, to posterior tip of tail; in contrast to WL, measured from end of arms to posterior tip of tail)
  • EyD, eye diameter
  • FL, fin length
  • FW, fin width
  • HL, head length (most often base of arms to edge of mantle)
  • HW, head width
  • LD, lens diameter
  • LRL, lower rostral length of beak
  • ML, mantle length (used only where stated as such)
  • MW, maximum mantle width (used only where stated as such)
  • WL, "whole" length (end of arms, often damaged, to posterior tip of tail; in contrast to EL, measured from end of tentacles to posterior tip of tail)
  • WT, weight

Repositories

Institutional acronyms are those defined by Leviton et al. (1985) and Leviton & Gibbs (1988). Where the acronym is unknown, the full repository name is listed.

Specimen images

The number directly below each image corresponds to the specimen or sighting, in the List of colossal squid, that the image depicts. The date on which the specimen was first captured, found, or observed is also given.

Notes

  1. Similar near-white colouration was seen in the first habitat footage of both the giant squid and Kondakovia longimana (giant warty squid), much to the surprise of experts, as dead or dying specimens of these species likewise have reddish skin. [14]
  2. The fins of the 2007 Ross Sea specimen measured around 1.2 m (3.9 ft) across and it had a mantle width of 98.2 cm (3.22 ft). [17] The arms ranged in length from 0.85 m (2.8 ft) to 1.15 m (3.8 ft), while the two tentacles were around 2.1 m (6.9 ft) long. [18]
  3. As reported by the Museum of New Zealand Te Papa Tongarewa, specimens of Nototodarus sloanii , the New Zealand arrow squid, can shrink by as much as 22% when dehydrated with alcohol solutions. [19] The colossal squid specimen contracted by a further 5% after several years in preservative fluid (first formalin and later propylene glycol). [20]
  4. In descending order of confirmed maximum size: Architeuthis dux (giant squid) was first photographed alive in its natural habitat in 2004, and filmed therein in 2012, 2017, and 2019; Taningia danae (Dana octopus squid) was filmed in 2005 and again in 2012; Onykia robusta (robust clubhook squid) was filmed alive in shallow water in 1993 or earlier; Dosidicus gigas (Humboldt squid) is commonly encountered and filmed; and live habitat footage of Kondakovia longimana (giant warty squid) was released in 2017. [26] Among octopuses, Enteroctopus dofleini (giant Pacific octopus) is commonly encountered and filmed, and the deep-sea Haliphron atlanticus (seven-arm octopus) has been recorded from submersibles on a number of occasions.

Related Research Articles

<span class="mw-page-title-main">Squid</span> Superorder of cephalopod molluscs

A squid is a mollusc with an elongated soft body, large eyes, eight arms, and two tentacles in the superorder Decapodiformes, though many other molluscs within the broader Neocoleoidea are also called squid despite not strictly fitting these criteria. Like all other cephalopods, squid have a distinct head, bilateral symmetry, and a mantle. They are mainly soft-bodied, like octopuses, but have a small internal skeleton in the form of a rod-like gladius or pen, made of chitin.

<span class="mw-page-title-main">Giant squid</span> Deep-ocean dwelling squid in the family Architeuthidae

The giant squid is a species of deep-ocean dwelling squid in the family Architeuthidae. It can grow to a tremendous size, offering an example of abyssal gigantism: recent estimates put the maximum size at around 12–13 m (39–43 ft) for females and 10 m (33 ft) for males, from the posterior fins to the tip of the two long tentacles. The mantle of the giant squid is about 2 m long, and the length of the squid excluding its tentacles rarely exceeds 5 m (16 ft). Claims of specimens measuring 20 m (66 ft) or more have not been scientifically documented.

<span class="mw-page-title-main">Antarctic toothfish</span> Species of fish

The Antarctic toothfish is a large, black or brown fish found in very cold (subzero) waters of the Southern Ocean near Antarctica. It is the largest fish in the Southern Ocean, feeding on shrimp and smaller fish, and preyed on by whales, orcas, and seals. It is caught for food and marketed as Chilean sea bass together with its sister species, the more northerly Patagonian toothfish. Often mistakenly called "Antarctic cod," the Antarctic toothfish belongs to the notothen family (Nototheniidae), a group of fish species abundant near Antarctica.

<span class="mw-page-title-main">Cranchiidae</span> Family of cephalopods known as glass squid

The family Cranchiidae comprises the approximately 60 species of glass squid, also known as cockatoo squid, cranchiid, cranch squid, or bathyscaphoid squid. Cranchiid squid occur in surface and midwater depths of open oceans around the world. They range in mantle length from 10 cm (3.9 in) to over 3 m (9.8 ft), in the case of the colossal squid. The common name, glass squid, derives from the transparent nature of most species. Cranchiid squid spend much of their lives in partially sunlit shallow waters, where their transparency provides camouflage. They are characterised by a swollen body and short arms, which bear two rows of suckers or hooks. The third arm pair is often enlarged. Many species are bioluminescent organisms and possess light organs on the undersides of their eyes, used to cancel their shadows. Eye morphology varies widely, ranging from large and circular to telescopic and stalked. A large, fluid-filled chamber containing ammonia solution is used to aid buoyancy. This buoyancy system is unique to the family and is the source of their common name "bathyscaphoid squid", after their resemblance to a bathyscaphe. Often the only organ that is visible through the transparent tissues is a cigar-shaped digestive gland, which is the cephalopod equivalent of a mammalian liver. This is usually held in a vertical position to reduce its silhouette and a light organ is sometimes present on the lower tip to further minimise its appearance in the water.

<span class="mw-page-title-main">Te Papa</span> National museum of New Zealand

The Museum of New Zealand Te Papa Tongarewa is New Zealand's national museum and is located in Wellington. Usually known as Te Papa, it opened in 1998 after the merging of the National Museum of New Zealand and the National Art Gallery. An average of more than 1.5 million people visit every year, making it the 26th-most-visited art gallery in the world. Te Papa operates under a bicultural philosophy, and emphasises the living stories behind its cultural treasures.

<span class="mw-page-title-main">Taoniinae</span> Subfamily of squids

Taoniinae is a subfamily containing ten genera of glass squids.

<i>Megalocranchia fisheri</i> Species of squid

Megalocranchia fisheri is a species of glass squid. Its natural range covers at least the waters off Hawaii. The species may attain a mantle length of 1.8 m (5.9 ft) and a total length of over 2.7 m (8.9 ft), making it one of the largest species of squid, together with the colossal squid, the giant squid, and the robust clubhook squid. It inhabits surface and mid-depth waters of open ocean. Juveniles live near the surface, while adults occupy mesopelagic depths during the day and migrate to near-surface waters at night. M. fisheri possesses two large light organs in the gill cavity. Females additionally have light organs on the ends of their third arm pair. As the animal matures, its fins become spear-like in appearance.

<span class="mw-page-title-main">Cephalopod size</span> Body variation

Cephalopods, which include squids and octopuses, vary enormously in size. The smallest are only about 1 centimetre (0.39 in) long and weigh less than 1 gram (0.035 oz) at maturity, while the giant squid can exceed 10 metres (33 ft) in length and the colossal squid weighs close to half a tonne (1,100 lb), making them the largest living invertebrates. Living species range in mass more than three-billion-fold, or across nine orders of magnitude, from the lightest hatchlings to the heaviest adults. Certain cephalopod species are also noted for having individual body parts of exceptional size.

Moroteuthopsis longimana, also known as the giant warty squid or longarm octopus squid, is a large species of hooked squid. It attains a mantle length of at least 85 cm and probably over 1.15 m. The largest complete specimen of this species, measuring 2.3 m in total length, was found in Antarctica in 2000.

<span class="mw-page-title-main">Steve O'Shea</span> New Zealand marine biologist

Steve O'Shea is a marine biologist and environmentalist known for his research on giant squid.

<span class="mw-page-title-main">Seven-arm octopus</span> Species of cephalopod

The seven-arm octopus, also known as the blob octopus or sometimes called septopus, is one of the two largest known species of octopus; the largest specimen ever discovered had an estimated total length of 3.5 m (11 ft) and mass of 75 kg (165 lb). The only other similarly large extant species is the giant Pacific octopus, Enteroctopus dofleini.

<span class="mw-page-title-main">Colossal squid</span> Species of squid

The colossal squid is the largest member of its family Cranchiidae, the cockatoo or glass squids, with its second largest member being Megalocranchia fisheri. It is sometimes called the Antarctic cranch squid or giant squid and is believed to be the largest squid species in terms of mass. It is the only recognized member of the genus Mesonychoteuthis and is known from only a small number of specimens. The species is confirmed to reach a mass of at least 495 kilograms (1,091 lb), though the largest specimens—known only from beaks found in sperm whale stomachs—may perhaps weigh as much as 600–700 kilograms (1,300–1,500 lb), making it the largest known invertebrate. Maximum total length has been estimated at 9–10 metres (30–33 ft). The colossal squid has the largest eyes of any known creature ever to exist, with an estimated diameter of 27 cm (11 in).

<span class="mw-page-title-main">Cephalopod attack</span> Overview of attacks by cephalopods on humans

Cephalopod attacks on humans have been reported since ancient times. A significant portion of these attacks are questionable or unverifiable tabloid stories. Cephalopods are members of the class Cephalopoda, which includes all squid, octopuses, cuttlefish, and nautiluses. Some members of the group are capable of causing injury or death to humans.

Stauroteuthis gilchristi is a species of small pelagic octopus found at great depths in the south Atlantic Ocean. It is believed to be one of a very small number of octopuses to exhibit bioluminescence, like its sister taxon Stauroteuthis syrtensis.

<span class="mw-page-title-main">Cephalopod beak</span> Body part of cephalopods

All extant cephalopods have a two-part beak, or rostrum, situated in the buccal mass and surrounded by the muscular head appendages. The dorsal (upper) mandible fits into the ventral (lower) mandible and together they function in a scissor-like fashion. The beak may also be referred to as the mandibles or jaws.

<i>The Search for the Giant Squid</i> 1998 book by Richard Ellis

The Search for the Giant Squid is a non-fiction book by Richard Ellis on the biology, history and mythology of the giant squid of the genus Architeuthis. It was well received upon its release in 1998. Though soon rendered outdated by important developments in giant squid research, it is still considered an important reference on the subject.

<span class="mw-page-title-main">Ramari's beaked whale</span> Medium-size New Zealand whale

Ramari's beaked whale is a medium size whale in the genus Mesoplodon. It is found in cool waters of the Southern Hemisphere. The species name, eueu, comes from the Khwedam word meaning 'big fish', as most of the strandings of these whales come from Khoisan territories in South Africa. The common name honours Māori whale expert Ramari Stewart.

References

Short citations

Full citations

A

Contents: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z {Author unknown}
  • Abe, K. (2019a). 伝説の巨大イカ4K撮影に成功!? NHK「ダーウィンが来た!」13日放送. AV Watch, 10 October 2019. (in Japanese)
  • Abe, K. (2019b). ついに27日放送! 巨大深海イカの4K撮影に挑んだNHK「ダーウィンが来た!」. AV Watch, 25 October 2019. (in Japanese)
  • Aldridge, A.E. (2009). Can beak shape help to research the life history of squid? New Zealand Journal of Marine and Freshwater Research43(5): 1061–1067. doi:10.1080/00288330.2009.9626529
  • Anderton, J. (2007). World's largest squid landed in NZ. The official website of the New Zealand Government. [Archived from the original on 2 May 2008.]
  • Atkinson, K. (2008a). NZ Antarctic voyagers return with scientific treasure trove. The New Zealand Herald, March 20, 2008.
  • Atkinson, K. (2008b). Size matters on 'squid row' (+photos, video). The New Zealand Herald, May 1, 2008.

B

Contents: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z {Author unknown}

C

Contents: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z {Author unknown}

D

Contents: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z {Author unknown}

E

Contents: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z {Author unknown}

F

Contents: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z {Author unknown}

G

Contents: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z {Author unknown}

H

Contents: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z {Author unknown}

J

Contents: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z {Author unknown}

K

Contents: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z {Author unknown}

L

Contents: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z {Author unknown}

M

Contents: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z {Author unknown}

N

Contents: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z {Author unknown}

O

Contents: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z {Author unknown}

P

Contents: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z {Author unknown}

R

Contents: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z {Author unknown}

S

Contents: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z {Author unknown}

T

Contents: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z {Author unknown}

V

Contents: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z {Author unknown}

W

Contents: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z {Author unknown}

X

Contents: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z {Author unknown}

Y

Contents: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z {Author unknown}

Author unknown

Contents: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z {Author unknown}