Although all snakes can swim, sea snakes live mostly in the water. They do need to come up for air but can stay under water for up to an hour! Since they need air regularly they are usually found in shallow waters of the Indian Ocean, and warmer areas of the Pacific Ocean. They eat fish, fish eggs and eels that they find under rocks and in reefs.
There are about 30-50 different types of sea snakes and they belong to the Cobra family. The average Sea snake grows to about 2 meters long and has a smallish head for its body size. Their tails are flattened to make fast swimming possible and flaps over their nostrils close when they are underwater.
Sea snakes are very poisonous. Fortunately, these snakes have short fangs and they are unable to bite through diver’s suits very easily. They are not likely to bite unless threatened.
Eels are sometimes mistaken for Sea Snakes. Eels are part of the fish family and have gills for breathing. Sea snakes do not have gills but lungs instead and need to go to the surface for air.
Sea Kraits are one of the few sea snakes that go to land to lay their eggs while most others, like the Olive sea snake will give birth in the water. Sea snakes do not have gills but lungs instead and need to go to the surface for air.