squid squidmollusks of the family Cephalopoda that are a favorite food of the sperm whale Related Articles: Glossary: cephalopodGlossary: invertebrateWebinar Archive: Introduction to Underwater AcousticsFeatured Sound: Beluga WhaleBeaked WhalesCommercial FisherPotential effects of sound on marine invertebratesHow do marine invertebrates detect sounds?Leopard SealRoss Seal Chris Knowlton2017-02-26T20:10:02-05:00