squid squidmollusks of the family Cephalopoda that are a favorite food of the sperm whale Related Articles: Glossary: cephalopodGlossary: invertebrateWebinar Archive: Introduction to Underwater AcousticsGroup-specific VocalizationsWhat components of sound are used for hearing?Featured Sound: Beluga WhaleDr. Benoit-BirdBeaked WhalesPotential effects of sound on marine invertebratesFin Whale Chris Knowlton2017-02-26T20:10:02-05:00