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Phylum Chordata > Subphylum Vertebrata > Class Reptilia > shore snakes
Yellow-lipped sea krait
Laticauda colubrina
Family Hydrophiidae
updated Aug 10

Where seen? This beautiful snake is sometimes seen on our Southern shores especially at night, hunting among reefs and coral rubble. The snake is typically found in shallow seas around coral reefs and rocky shores.

Sisters Island, Dec 05
According to Baker, in Singapore, it is only found on our Southern Islands. It can crawl about on land (not helpless like other sea snakes). It is widely distributed in the Indo-Pacific.

Features: To about 1.4m long. Males are smaller (rarely more than 1m in length) while females are heavier bodied and longer. Bluish-grey with distinct smooth scales and regularly spaced, equal-sized black bands that circle the entire body. Its upper lips are distinctly yellow, thus its common name. Head slightly distinct from the body, but no obvious 'neck'. Its tail is flattened sideways into a paddle-like shape and used like an oar to swim with. At first glance, the tail and the head of this snake look very similar. A study suggests this may help protect the snake from its predators.

Deadly beauty: The snake has a highly toxic venom that can be fatal to humans. But it is a gentle and docile snake with tiny fangs. It will not bite unless provoked. It is best to leave it alone, although it is curious and may investigate you!

How to stay safe: Wear covered shoes and long pants to cover all skin exposed to water. Don't harass, touch or pick up the snake.

Sometimes confused with the harmless Banded file snake (Acrochordus granulatus). Here's how to tell apart banded snakes seen near the coast. It may also be confused with eels. Here's more on how to tell apart sea snakes, eels and eel-like animals.

What does it eat? It eats fishes and fish eggs. Eels are among their favourite prey. It has been seen actively hunting at night on the shore even at low tide, probing the coral rubble crevices for tit bits. It also comes ashore to rest, digest its meal, shed its skin and to mate.

Sea snake babies: These snakes generally breed on coral atolls and rocky islets where they may gather in large groups to do so. The reef flat at Pulau Sudong used to be a well known nesting ground for the snake until it was reclaimed. The mother snake lays 5-9/7-13 eggs, in caves and grottos. The babies look just like their parents.

Status and threats: Our sea snakes are listed as 'Endangered' on the Red List of threatened animals of Singapore. Like other creatures of the intertidal zone, they are affected by human activities such as reclamation and pollution.

Like other snakes, it sticks out its
tongue to sense its surroundings

Sisters Island, Dec 03


Sentosa, Oct 03



It has a paddle-shaped tail.
Sentosa, Oct 03

Yellow-lipped sea snakes on Singapore shores


Pulau Semakau, Sep 05

Pulau Hantu, Apr 06

Sisters Island, Nov 03


Sisters Island, May 09
Photo shared by Marcus Ng on his flickr.

Beting Bemban Besar, Aug 12
 

video clip and more photos of yellow-lipped sea krait on Singapore shores

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References

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