Sea snakes seem pretty cool. 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! Wow, try holding your breath that long! 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 reef. There are about 30-50 different types of sea snakes and they beg 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.