MarineBio Conservation Society
Marine Bio: Risso's Dolphin
Illustrated reference guide features useful information on Risso's dolphins with facts on physical characteristics, behavior, range, habitat, diet, and conservation status.
Smithsonian Institution
National Museum of Natural History: American Mammals: Risso's Dolphin
Much of what we know about Risso's dolphin, also called grampus, comes from studying stranded animals. They inhabit deep tropical and warm-temperate waters worldwide, usually where the water is deeper than 180 m, making them hard to...