Olive Sea Snake

Found singly, cruising the seabed for their next meal, over lagoons, coastal, coral and rocky reefs. Colour grey with olive/yellow head and flattened tail, the flattened tail makes this snake an excellent swimmer.
Widespread North West Atlantic, Mediterranean, Indo-Pacific

Sea snakes are reptiles that have adapted to life underwater, they breathe air through valved nostrils, the valves close when they dive down and open when they come up for air, they usually stay down for 20-30mins before coming up for air.
These snakes also give birth to live young.
Although they have a poisonous bite that can paralyse prey they are not normally aggressive and are usually inquisitive to divers.