How to Tell the Difference Between Sea Otters and River Otters – Ocean Conservancy
https://oceanconservancy.org/blog/2019/01/30/tell-difference-sea-otters-river-otters/
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How to Tell the Difference Between Sea Otters and River Otters – Ocean Conservancy
https://oceanconservancy.org/blog/2019/01/30/tell-difference-sea-otters-river-otters/