A genus of marine otters found in coastal waters of the Pacific, known for their intelligence and tool use.
From Greek 'en' (in) plus 'hydra' (water creature). The scientific name literally means 'in-water' creature, referring to sea otters that spend their entire lives in marine environments.
Sea otters (Enhydra lutris) are one of nature's most sophisticated tool-users—they crack open shellfish with rocks balanced on their bellies, and this ability helped them survive in coastal ecosystems where others couldn't compete.
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