National Geographic : 1941 Sep
Sea Lions of All Sizes and Ages Live Amicably in One Herd on the SanBenito Islands With the huge bulls are their mates and little ones. Several times the author observed old males, gathered peacefully inthrees and fours, emitting noises which sounded like an attempt at a concert. Sea lions use all four flippers when walking. True seals employ only their fore flippers and pull along thehind part oftheir bodies.