The Grey Seal is a species of large seal of the Phocidae, or “true seal” family, found abundantly along the Atlantic Ocean and Baltic Sea coasts. Its preferred habitat is rocky shorelines, though it heads out onto open water to feed on fish, mollusks, and cephalopods. Grey Seals live in small herds comprising of a dominant male and several females. As their name suggests, their coloration consists of grey or dark-grey backs, with cream-colored bellies. Grey Seals can slow down their heartbeat while diving, to reduce oxygen use and prolong their dives.