Birds of prey, sharks, large fish, eels and crocodiles are predators of the sea snake. Sea snakes live in shallow waters and breathe air using a long lung that also assists in buoyancy. Although the sea snake isn't aggressive, it produces some of the deadliest venom in the world.
Due to its small scales, the sea snake isn't adapted for moving adeptly on land. The skin of the sea snake is shed much more often than other snakes as a method of reducing barnacles. Sea snakes usually dive for 20 to 30 minutes at a time but are capable of surviving hours underwater if necessary.