Cuvier's beaked whales may have the most extensive range of any beaked whale species (Heyning 1989, 2002). They are widely distributed in offshore waters of all oceans, from the tropics to the polar regions in both hemispheres. Their range covers most marine waters of the world, with the exception of shallow water areas, and very high-latitude polar regions. They are found in many enclosed seas, such as the Gulf of California, Gulf of Mexico, Caribbean Sea, Sea of Japan, and the Sea of Okhotsk (but not in the Baltic or Black Seas). This is the only species of beaked whale regularly found in the Mediterranean Sea (Podesta et al. 2006).