Now Hear This

As part of a research efffort to find out if, and how, squid hear, biologist T. Aran Mooney sets a squid into a tank where its neural reactions will be measured in response to a broad range of sound frequencies. His preliminary findings indicate that squid do, in fact, hear. “But they only hear up to a certain frequency,” he said. That may help explain why squid are such a prolific food source for other animals–they may not always hear well enough to evade approaching predators.(Photo by Tom Kleindinst, Woods Hole Oceanographic Institution)