A Common House Pet Becomes a Harbor Seal

Puijila_BWPuijila darwini resembles a common house pet, and could easily be mistaken for an otter or large stoat. However, it is actually the ancestor of the walrus, sea lion, harbor seal, and other popular members of the pinniped family. What happened was that it swam in freshwater lakes and streams and somehow got washed out to sea.

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