Venomous snake proves that two heads are better than one

Thursday, August 6, 2009 - 11:32 in Biology & Nature

The yellow-lipped sea krait has evolved an ingenious way to scare off predators while its head is otherwise engaged Having a head full of venomous fangs is great for scaring off predators. Better still, two heads. Sea snakes are fearsome predators, feeding on small fish that they find lurking around coral reefs. But when they poke their heads into crevices to look for their next meal, they let their guard down and run the risk of getting eaten themselves, by larger fish such as sharks. The yellow-lipped sea krait, which is a native of the Pacific and Indian Oceans, has evolved a clever way to ward off predators while foraging. The coloration of its tail end is strikingly similar to its head, and when the snake sticks its real head into nooks and crannies to look for food, the tail moves around like a head to...

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