sea lion, any of six species of found primarily in Pacific waters. Sea lions are characterized by a coat of short coarse hair that lacks a distinct undercoat. Except for the California sea lion (Zalophus californianus), males have lion-like manes and constantly roar to defend their harems (hence their name).Unlike the true, or earless, seals (family Phocidae), sea lions and other eared seals (family Otariidae) are able to rotate their hind flippers forward to use all four limbs when moving about on land. Sea lions also have longer flippers than true seals. Sea lions feed principally on fish, crustaceans, and s (squid and octopus), but they also will consume s. Breeding occurs in large herds, the males establishing harems of 3 to 20 females. Brown pups are born after a gestation period of 12 months. Sea lions are hunted, though not on a large scale, for their meat, hides, and blubber.Sea lion in Galapagos National Park, Galapagos Islands, Ecuador.(more)The , found along the western coast of from the to , is the trained commonly seen in acts and zoos. Large-eyed and playful, it is pale to dark brown but appears black when wet. The male reaches a maximum length of about 2.5 metres (8 feet) and a weight of 400 kg (880 pounds), and the female grows to about 1.8 metres and 90 kg. In captivity it can live more than 30 years (less in the wild). The California sea lion is mostly a coastal animal that frequently leaps from the water when swimming. A fast swimmer and excellent diver, it forages underwater for an average of three minutes at a time, but dives can last up to nine minutes. The maximum recorded dive depth is 274 metres (900 feet). California sea lions commonly gather on man-made structures., The sea lions have six extant and one extinct species (the Japanese sea lion) in five genera. Their range extends from the subarctic to tropical waters of the global ocean in both the Northern and Southern Hemispheres, with the notable exception of the northern Atlantic Ocean., Sea lion, any of six species of eared seals found primarily in Pacific waters. Sea lions are characterized by a coat of short coarse hair that lacks a distinct undercoat..