Sea otters are keystone species in kelp forests. Kelp forests rely on the top-down pressure sea otters exert via predation on sea urchins. By controlling the sea urchin population, they help manage ...

A male sea otter suspected of killing and defiling at least 20 river otters over the past decade may be doing so because of a lack of a mate, experts theorize. The otter, known as Ollie ...

Floating off the south coast of Vancouver Island is a lonely-looking sea otter with a dark secret – many dark secrets. Known to the whale watching community and his fans as ‘Ollie’, the infamous ...