The Boy in the Submarine – Season 3, Episode 2: Sea Otters
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The Boy in the Submarine – Season 3, Episode 2: Sea Otters
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Sea otters are the biggest member of the mustelid family, which includes skunks, weasels, ferrets, stoats, badgers, and minks… but they are also the smallest marine mammal.
Sea otters dive underwater for up to 8 minutes at a time to catch crabs, shellfish, and urchins. They are clever tool-users who bang their prey with rocks to crack open their shells for meat. They also wrap their babies in kelp to keep them from floating away while they dive!
Sea otters are very important for the environment, which is why we call they a keystone species. All along the North Pacific coast of North America, where there are sea otters, sea grasses are more healthy. They also eat up to 1/4 their body weight in sea urchins a day, which is important, because sea urchins can devastate a kelp forest if they become too numerous.
Sea otters are endangered, mostly because we used to hunt them for their fur. Laws were passed to protect them as early as 1911, but one of the most important things we have done to protect them is to just stop considering fur clothing fashionable!