ventral ventralof, pertaining to, or situated at the back or upper side. Related Articles: Glossary: baleen whalesGlossary: laryngeal sacHow do marine mammals produce sounds?Baiji, Yangtze River DolphinHow do marine invertebrates produce sounds?Ross SealRough-toothed dolphin Chris Knowlton2017-02-26T20:10:08-05:00