invertebrate invertebratean animal that lacks a backbone (marine examples include lobsters, shrimp, squid, clams, crabs, and sea stars). Related Articles: Glossary: exoskeletonWhy is sound important to marine animals?Masking in FishesSeismic AirgunsHow do marine invertebrates detect sounds?Tutorial: Fishes - MaskingWind TurbinePile DrivingNassau Grouper Chris Knowlton2018-01-19T18:09:14-05:00