The four Phocoena species are primarily fish eaters that usually swim in pairs or small groups along coastlines and oc.... porpois dall

The four Phocoena species are primarily fish eaters that usually swim in pairs or small groups along coastlines and occasionally in rivers. The Dall porpoise ( Phocoenoides dalli ) is the largest porpoise and the only member of its genus. The Dall porpoise is black with a large white patch on each side of the body. It is usually seen in groups of 2 to 20 along the northern rim of the Pacific Ocean, where they eat squid and fish. dalli truei ) is considered by some authorities to be a separate subspecies and is distinguished from the Dall porpoise by its absence of the striking white body patches. The finless porpoise ( Neophocaena phocaenoides ) is a small, slow-moving inhabitant of coastal waters and rivers along the Indian Ocean and western Pacific Ocean. The finless porpoise lives alone or in small groups and eats crustaceans, fish, and squid. porpois dall