Human effects on growth and expansion also include changes to a limited abundance of small corals and to fewer small colonies, i.e., more individual large colonies. All have fixed fangs and potent venom. Sea snakes are air breathers and must surface to breathe. Their tails and body are flattened laterally, making them efficient swimmers. Sea snakes mate in water and give birth to live young.
Most sea snakes are inoffensive and are only dangerous if they are provoked.
In fact some sea snakes, like Laticauda are extremely docile and children in Fiji pick them up and are rarely bitten. There are species that are more easily provoked and may bite if they are stepped on or handled roughly. Only a small percentage of people bitten my sea snakes actually show signs of poisoning. The distribution of sea snakes is concentrated in tropical waters, as they are cold blooded and regulate their internal body temperature from the external environment. No sea snakes live in the Atlantic Ocean.