Sea Otters The Smallest Marine Mammals in the World #shorts

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Sea otters! are the only marine mammal that doesn't have a layer of blubber to keep them warm. Instead, they have the densest fur of any mammal, with up to 1 million hairs per square inch.
Sea otters are excellent swimmers and can hold their breath for up to 5 minutes while diving. They can swim up to 6 mph (9.7 kph) and dive up to 300 feet (90 meters).
Sea otters have a high metabolism and can eat 25 to 30 percent of their body weight in one day, which would be equivalent to a 175-pound human eating 45 pounds of food in one day.
They mainly feed on sea urchins, crabs, clams, and other shellfish.
When they sleep, sea otters wrap themselves in kelp to ensure they do not float away. They will also hold each other’s hands to stay close while sleeping. A group of resting otters is called a raft and researchers have documented over 1,000 sea otters in a single raft.