Tennessee Aquarium - Amazing Animals Subfamilies laticaudinae and hydrophiinae Sea kraits are snakes that live in the sea. Their nostrils also have closure flaps to keep water out when they are submerged.
Sea kraits can stay submerged for extended periods of time.
The Laticaudinae subfamily, is adapted with flat scales on the belly making the snake well suited for moving about on land. These scales, known as scutes, grip the ground allowing the snake to move on the ground. The sea kraits within the hydrophiinae subfamily are true sea creatures - never coming ashore, even bearing their young in the water. Sea kraits are related to cobras and have powerful nerve toxins, which help them hunt for fish and eels. They have short fangs in the front of their mouth that can inject very powerful and deadly venom.