This remarkable young sea is thought to be around five million years old and home to nearly 900 species of fish and ... Large colonies of Californian sea lions are found in the Sea of Cortez.

They comprise the extant families Odobenidae (whose only living member is the walrus), Otariidae (the eared seals: sea lions and fur ... [b] Several species exhibit sexual dimorphism.

Just like dogs bark, sea lions bark, grunt, growl, roar, and whistle and each is a different form of communication. According ...