Hard of herring? Not us, say crabs
Yahoo! - 06/17/2014
Crabs have a sort of inner ear that helps them to hear nearby predators, US scientists have found.
An organ called the statocyst, previously shown to play a role in crustacean balance, is also used for the crab equivalent of hearing, they reported Tuesday in the British journal Proceedings of the Royal Society B.
Biologists at Northeastern University in Massachusetts conducted lab experiments on mud crabs — small crustaceans found in reefs in the Gulf of Mexico — to see how they responded to underwater sounds.