Gastropods, commonly known as slugs and snails, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda.
Pyroteuthidae is a family of squids. The family comprises two genera. Species are diurnally mesopelagic, migrating into surface waters during the night. The family is characterised by the tentacles, which have a permanent constriction and bend near the base; and photophores occurring on the tentacles, eyeballs, and viscera. Members reach mantle lengths of 23–50 mm. Paralarvae of the family are common around the Hawaiian Islands, with up to 17% of collected specimens in the area belonging to Pyroteuthidae.
Staurozoa is a class of Medusozoa. It has one extant order: Stauromedusae with a total of 50 known species. A fossil group called Conulariida has been proposed as a second order, although this is highly speculative. The extinct order is largely unknown and described as a possibly cnidarian clade of marine life with shell-like structures, the Conulariida. Staurozoans are small animals that live in marine environments, usually attached to seaweeds, rocks, or gravel. They have a large antitropical distribution, a majority found in boreal or polar, near-shore, and shallow waters. Few staurozoans are found in warmer tropical and subtropical water environments of the Atlantic, Indian, and Pacific Ocean basins, but most are known from the Northern Hemisphere. Over the years the number of discovered species has increased, with an estimated 50 species currently recognized. Information on Staurozoa is sparse, and it is one of the least studied groups within Cnidaria. While often neglected, correctly recognizing the characteristics of this class is crucial for understanding cnidarian evolution.
Turbonillinae is a subfamily of mostly minute parasitic sea snails, marine gastropod molluscs in the family Pyramidellidae, the pyrams and their allies.
Onykia ingens, the greater hooked squid, is a species of squid in the family Onychoteuthidae. It occurs worldwide in subantarctic oceans.
Onychoteuthis banksii, the common clubhook squid, is a species of squid in the family Onychoteuthidae. It is the type species of the genus Onychoteuthis. This species was thought to have a worldwide distribution but with the revision of the genus Onychoteuthis in 2010, it is now accepted that Onychoteuthis banksii is restricted to the central and northern Atlantic and the Gulf of Mexico while a recently described species, Onychoteuthis horstkottei, is found in the Pacific Ocean. The type locality is the Gulf of Guinea.
Magnoteuthis microlucens is a species of squid; the most common species of Mastigoteuthis around the main Hawaiian Islands.
Onychoteuthis compacta is a species of squid in the family Onychoteuthidae, known to occur in Hawaiian waters. as well as in other areas of the Central Pacific and western north-central Atlantic, it probably has a circumglobar distribution. The species is known to have a mantle length of at least 122 mm for females and 127 mm for males. Each tentacle has 22 club hooks, measuring approximately 30 mm in mature specimens.
Notonykia africanae, the African clubhook-squid, is a species of squid in the family Onychoteuthidae. It is the type species of the genus Notonykia. While the mature size of the species is unknown, it is known to reach a mantle length of at least 180 mm. Tentacles reach approximately 70% of the mantle length, and contain 14–20 club hooks. Arms are known to reach 27–45% and 33–55% of the mantle length; each containing 50–60 suckers. The species is located in southern waters off Australia, Tasmania, New Zealand and South Africa.
Notonykia nesisi is a species of squid in the family Onychoteuthidae. It is differentiated from Notonykia africanae by the shape of the tentacles. While the species is only known from immature specimens, it is known to achieve a mantle length of at least 100 mm. The tentacles are about 65-115% of the mantle length, and contain 6-18 hooks.
Pyroteuthis margaritifera, the jewel enope squid, is a species of squid in the family Pyroteuthidae.
Vetigastropoda is a major taxonomic group of sea snails, marine gastropod mollusks that form a very ancient lineage. Taxonomically the Vetigastropoda are sometimes treated as an order, although they are treated as an unranked clade in Bouchet and Rocroi, 2005.
Sigmurethra is a taxonomic category of air-breathing land snails and slugs, terrestrial pulmonate gastropod molluscs. This is an informal group which includes most land snails and slugs.
Nototodarus sloanii is a species of squid commonly known as the New Zealand arrow squid or Wellington flying squid. It is also known by its Māori name of wheketere. It is a favoured prey species of a number of marine mammals and diving birds. It is an important food source for the New Zealand fur seal and two endangered species: the New Zealand sea lion and the yellow-eyed penguin. Nototodarus sloanii is sought by trawler fishermen for human consumption; New Zealand sea lions are frequently caught in trawl nets and drowned when feeding on N. sloanii.
Todaropsis eblanae, also known as the lesser flying squid, is a species of short finned squid in the monotypic genus Todaropsis of the family Ommastrephidae.
Anteaeolidiella saldanhensis, is a species of sea slug, an aeolid nudibranch. It is a shell-less marine gastropod mollusc in the family Aeolidiidae.
Anteaeolidiella poshitra is a species of sea slugs, an aeolid nudibranch. It is a marine gastropod mollusc in the family Aeolidiidae.
After excluding groups not related, the informal group Sigmurethra has become the suborder Helicina, with the following infraorders and a collection of families with no superfamily:
Pterygioteuthis hoylei is a species of squid in the family Pyroteuthidae. It is considered conspecific with Pterygioteuthis giardi by some authorities. It can be identified from P. giardi by having four photophores on the tentacles and many chromatophores spread along the tentacle stalk and around the aboral surface of the tentacular club. It is also slightly larger than P. giardi, it has been so far recorded only from the eastern tropical Pacific Ocean where it is the only species of in the family Pyroteuthidae to occur there, although its actual distribution may be wider than currently known. The specific name honours the British malacologist William Evans Hoyle (1855–1926).
Eatoniella latebricola is a species of marine gastropod mollusc in the family Eatoniellidae. It was first described by Winston F. Ponder in 1965. It is endemic to the waters of New Zealand.
