invertebrate invertebratean animal that lacks a backbone (marine examples include lobsters, shrimp, squid, clams, crabs, and sea stars).Related Articles: Glossary: exoskeletonBiological OceanographerHot Topic - Monitoring Wind Farm ConstructionHow do marine animals use sound?What are common underwater sounds?Why is sound important to marine animals?What components of sound are used for hearing?Audio GalleryMantis ShrimpMasking in Fishes Chris Knowlton2018-01-19T18:09:14+00:00