While it may appear to be adorable, sea otters hold hands for a practical purpose. The behavior known as 'rafting' is where single sex groups of sea otters numbering anywhere from two to several hundred group together, o... More »

Hands may swell during sleep due to dependent edema, which is an increase in fluid in a particular limb of the body. It could also be caused by heart medications, high blood pressure medications and even anti-inflammator... More »

Hands that go numb while a person is asleep are one of the tell-tale signs of carpal tunnel syndrome, according to Precision Orthopaedic Specialties, Inc. If it only happens occasionally, it could be the result of fallin... More »

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Sea otters are mammals that belong to the weasel family, have the densest fur of all animals and are a keystone species. As a keystone species, the sea otter is critical for the health and well-being of a great number of... More »

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Sea otters protect themselves from predators by escaping to dry land, hiding in kelp or swimming away. The main predators of sea otters are water-bound sharks and killer whales, so sea otters can protect themselves by cl... More »

Sea otters eat mainly slow-moving fish and marine invertebrates, such as crabs, sea urchins, abalones, clams, mussels, snails and octopuses. However, the diet and eating habits of sea otters may vary depending upon the l... More »

Although most mammals are terrestrial, many species inhabit the world’s oceans and seas, including seals, otters, whales and dolphins. As air-breathing mammals, these creatures must return to the water's surface often to... More »

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