Sea Snake Bite
Sea Snake Bite Overview
Sea snakes are usually 3-5 feet long (some can grow to 9 feet) with flat tails and scales. There are at least 52 species known and all of them are venomous. They are found in tropical and warm waters of the Pacific and Indian Oceans. There are no sea snakes in the Atlantic Ocean or Caribbean Sea. Although they evolved from terrestrial ancestors the vast majority cannot move on land.
They can move both forward and backwards in the water with equal speed. They can dive as deep as 328 feet and stay underwater for two hours. It is an air breather and must come to the surface to survive. A sea snake has scales where as eels do not.
Sea snakes are usually not aggressive unless provoked or cornered. Although they are highly venomous, only 20 % of bites result in significant symptoms or envenomation.
The venom in injected by fangs. Most species fangs are not long enough to penetrate through a wetsuit. The venom is very potent and toxic.
Bites typically occur when fishermen are removing the snakes from fishing nets or if the snake is stepped on while wading in the water.
Sea snakes can migrate into rivers from coastal waters and estuary settings (up to 3 miles).
Sea Snake Bite Symptoms
As sea snake venoms are neurotoxins, the typical symptoms of sea snake bites begin within three hours and include:
If no symptoms develop within eight hours then venom injection is very unlikely.
Scott D. Fell, DO, FAAEM
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