invertebrate invertebratean animal that lacks a backbone (marine examples include lobsters, shrimp, squid, clams, crabs, and sea stars). Related Articles: Glossary: exoskeletonUnderwater Sound and Coral Reef RestorationWhat are common underwater sounds?Why is sound important to marine animals?Audio GalleryDOSITS WebinarsWebinar Archive: Introduction to Underwater AcousticsWhat are soundscapes?Masking in FishesHow do marine invertebrates produce sounds? Chris Knowlton2018-01-19T18:09:14-05:00