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Hydrophis coggeri Cogger's Sea Snake, Black-Headed Sea Snake, Slender-necked Sea Snake, Pacific Yellow-banded Seasnake

Hydrophis coggeri is commonly referred to as Cogger's Sea Snake, Black-Headed Sea Snake, Slender-necked Sea Snake, Pacific Yellow-banded Seasnake. Difficulty in the aquarium: Not suitable for home aquaria!. Toxicity: Highly toxic.


Profilbild Urheber Dr. Paddy Ryan, USA

Hydrophis coggeri Laucala Bay P5210238 TP med res


Courtesy of the author Dr. Paddy Ryan, USA . Please visit www.ryanphotographic.com for more information.

Uploaded by Muelly.

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lexID:
17988 
AphiaID:
344054 
Scientific:
Hydrophis coggeri 
German:
Coggers Seeschlange, Schwarzkopf Seeschlange, Dünnhals-Seeschlange 
English:
Cogger's Sea Snake, Black-Headed Sea Snake, Slender-necked Sea Snake, Pacific Yellow-banded Seasnake 
Category:
 
Family tree:
Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Elapidae (Family) > Hydrophis (Genus) > coggeri (Species) 
Initial determination:
(Kharin, ), 1984 
Occurrence:
Australia, Fiji, New Caledonia, South West Pacific Ocean , Western Australia 
Marine Zone:
Subtidal, sublittoral, infralittoral, deep zone of the oceans from the lower limit of the intertidal zone (intertidal) to the shelf edge at about 200 m water depth. neritic. 
Sea depth:
1 - 50 Meter 
Habitats:
Bays, Intertidal zone, Tidal Zone, Seagrass meadows, Eelgrass Meadows, Seawater, Sea water 
Size:
39.37" - 53.94" (100cm - 137cm) 
Temperature:
59.9 °F - 83.66 °F (15.5°C - 28.7°C) 
Food:
Carnivore, Fish (little fishes), Predatory 
Difficulty:
Not suitable for home aquaria! 
Offspring:
None 
Toxicity:
Highly toxic 
CITES:
Not evaluated 
Red List:
Least concern (LC)  
Related species at
Catalog of Life
:
 
Author:
Publisher:
Meerwasser-Lexikon.de
Created:
Last edit:
2025-12-25 12:19:03 

Toxicity


Hydrophis coggeri is (very) poisonous and the poison can kill you under circumstances!!!
If you want to keep Hydrophis coggeri, inform yourself about the poison and its effects before buying. Keep a note with the telephone number of the poison emergency call and all necessary information about the animal next to your aquarium so that you can be helped quickly in an emergency.
The telephone numbers of the poison emergency call can be found here:
[overview_and_url_DE]
Overview Europe: European Association of Poisons Centres and Clinical Toxicologists

This message appears for poisonous, very poisonous and also animals whose poison can kill you immediately. Every human reacts differently to poisons. Please therefore weigh the risk for yourself AND your environment very carefully, and never act lightly!

Info

Hydrophis coggeri (Kharin, 1984)

Cogger's sea snake is a venomous sea snake from the Hydrophiinae subfamily of the Elapidae family. It is native to the waters around Western Australia and the southern Pacific Ocean.

The species name “coggeri” honors Australian herpetologist Harold Cogger.

Description: The water snake has yellow and black bands all over its body. The black bands are smaller than the yellow ones. The head is distinct from the body and marks a neck. The tail is flattened vertically. The scales on the head are larger than those on the rest of the body. The snake appears to be “smiling,” which is related to the position of the jaw. The nostrils are on the top of the head.

There is sexual dimorphism in Hydrophis coggeri. Females are larger than males. They are viviparous and give birth to 1 to 8 young.

The diet of Hydrophis coggeri consists of various fish, including gobies, moray eels, and snake eels.

It can be confused with Laticauda saintgironsi, as both snakes are narrow and have yellow and black stripes, and with the yellow-lipped sea snake (Laticauda colubrina), which has darker yellow bands.

Translated with DeepL.com (free version)

Synonymised names
Leioselasma coggeri Kharin, 1984 · unaccepted

External links

  1. Atlas of Living Australia (en). Abgerufen am 23.12.2025.
  2. DORIS (fr). Abgerufen am 23.12.2025.
  3. IUCN Red List of Threatened Species (multi). Abgerufen am 25.12.2025.
  4. ryanphotographic (en). Abgerufen am 23.12.2025.

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