Two young Galápagos sea lions play fight on a bouldery beach as waves crash over the rocks, on North Seymour Island, in the Galápagos Islands, Ecuador

galapagos sea lion sea lion zalophus wollebaeki glapagos galapagos islands pup sea lion pup play fight seymour island north seymour north seymour island santa cruz santa cruz island ecuador bbc marine mammal endangered endangered species conservation darwin charles darwin ocean sea flippers whiskers flipper boulders shore seal skin seal glossy wildlife nature endemic rocky shore rocks marine sleeping lobo marino breeding sexual dimorphism fur prey streamlined playing inquisitive waves lapping coat