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Sea Otter — printable fact sheet
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Sea Otter
Enhydra lutris
The sea otter (Enhydra lutris) is a marine mammal native to the coastal regions of the northern and eastern North Pacific Ocean. Notably, it is one of the few marine mammals capable of using tools, employing rocks to break open shellfish, which forms a significant part of its di…
Did you know?
- Sea otters have the densest fur of any animal, with as many as one million hairs per square inch.
- Sea otters have a unique adaptation allowing them to close their nostrils and ears when submerged, which aids in their aquatic lifestyle. Despite their playful appearance, they play a critical ecological role as a keystone species, maintaining the balance of kelp forest ecosystems by preying on sea urchins that would otherwise decimate the kelp. A common misconception is that sea otters are solitary; however, males often form groups called rafts, sometimes consisting of over 20 individuals. Their high metabolic rate requires them to consume about 25% of their body weight daily, primarily in the form of sea urchins, crabs, and fish.
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