A colony of elkhorn coral (Acropora palmata) grows on a healthy reef in the Caribbean Sea.

A mother and pup sea otter (Enhydra lutris), sharing a clam meal in Elkhorn Slough near Moss Landing, California, United States of America, North America

Golden Damselfish (Amblyglyphidodon aureus) and other schooling fish swim around the coral head topped with Elkhorn Coral in the South Pacific ocean near Tavarua Island offshore from Liti Levu, Fiji.

An adult female sea otter (Enhydra lutris), feeding on a crab in Elkhorn Slough near Moss Landing, California, United States of America, North America

Trumpetfish (Aulostomus maculatus) swims next to elkhorn coral (Acropora palmata), Molasses Reef, Key Largo, Florida, United States of America, North America

Elkhorn coral and female diver, Jost Van Dyke, British Virgin Islands

Traffic sign Caution Sea Otter, Speed Limit, Elkhorn Slough, California, USA, North America

Traffic sign Caution Sea Otter, Speed Limit, Elkhorn Slough, California, USA, North America

Close-up of Elkhorn Coral (Acropora Palmata) underwater, Roatan, Bay Islands, Honduras

Elderly couple pose together outside their home, Elkhorn, Nebraska, United States of America