Slender-necked sea snake

slender-necked sea snake
Conservation status
	; Least Concern (IUCN 3.1)
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Reptilia
Order:	Squamata
Suborder:	Serpentes
Family:	Elapidae
Genus:	Hydrophis
Species:	H. coggeri
Binomial name
	Hydrophis coggeri; (Kharin, 1984)
Synonyms
	Leioselasma coggeri; Kharin, 1984; Hydrophis coggeri; — Bauer & Vindum, 1990;

Last updated October 06, 2025

The slender-necked sea snake (Hydrophis coggeri), also known commonly as Cogger's sea snake, is a species of marine venomous snake in the subfamily Hydrophiinae of the family Elapidae. The species is native to waters around western Australia and the southern Pacific Ocean.

Etymology

The specific name, coggeri, is in honor of Australian herpetologist Harold Cogger.^[3]

Geographic range

H. coggeri is found in marine waters around Fiji, the Loyalty Islands, New Caledonia, and western Australia. The type locality is in Fiji.^[2]

Habitat

The preferred natural habitats of H. coggeri are coral reefs and seagrass beds, to a depth of 45 m (148 ft).^[1]

Diet

H. coggeri preys upon eels.^[1]

Reproduction

H. coggeri is viviparous.^[2] A gravid female was found to contain three embryos.^[1]

References

1 2 3 4 Rasmussen, A.; Sanders, K.; Lukoschek, V.; Guinea, M.; Courtney, T. (2010). "Hydrophis coggeri ". IUCN Red List of Threatened Species . 2010 e.T176743A7295429. doi: 10.2305/IUCN.UK.2010-4.RLTS.T176743A7295429.en . Retrieved 20 November 2021.
1 2 3 Hydrophis coggeri at the Reptarium.cz Reptile Database. Accessed 10 January 2019.
↑ Beolens, Bo; Watkins, Michael; Grayson, Michael (2011). The Eponym Dictionary of Reptiles. Baltimore: Johns Hopkins University Press. xiii + 296 pp. ISBN 978-1-4214-0135-5. ("Cogger's Sea Snake Hydrophis coggeri ", p. 56).

Cogger HG (2014). Reptiles and Amphibians of Australia, Seventh Edition. Clayton, Victoria, Australia: CSIRO Publishing. xxx + 1,033 pp. ISBN 978-0643100350.
Wilson S, Swan G (2013). A Complete Guide to Reptiles of Australia, Fourth Edition. Sydney: New Holland Publishers. 522 pp. ISBN 978-1921517280.
Kharin V (1984). "[A review of sea snakes of the group Hydrophis sensu lato (Serpentes, Hydrophiidae). 3. The genus Leioselasma]". Zoologicheskii Zhurnal63 (10): 1535–1546. (Leioselasma coggeri, new species, p. 1538). (in Russian).
Rasmussen AR, Sanders KL, Guinea ML, Amey AP (2014). "Sea snakes in Australian waters (Serpentes: subfamilies Hydrophiinae and Laticaudinae)—a review with an updated identification key". Zootaxa3869 (4): 351–371.

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[iucn_status_20_November_2021-1] 1 2 3 4 Rasmussen, A.; Sanders, K.; Lukoschek, V.; Guinea, M.; Courtney, T. (2010). "Hydrophis coggeri ". IUCN Red List of Threatened Species . 2010 e.T176743A7295429. doi: 10.2305/IUCN.UK.2010-4.RLTS.T176743A7295429.en . Retrieved 20 November 2021.

[RDB-2] 1 2 3 Hydrophis coggeri at the Reptarium.cz Reptile Database. Accessed 10 January 2019.

[3] Beolens, Bo; Watkins, Michael; Grayson, Michael (2011). The Eponym Dictionary of Reptiles. Baltimore: Johns Hopkins University Press. xiii + 296 pp. ISBN 978-1-4214-0135-5. ("Cogger's Sea Snake Hydrophis coggeri ", p. 56).

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