At about 4 or 5 years old, female sea otters typically have their first pup after a four-to-five-month-long pregnancy. (41 kilograms). The Furriest of Fur Coats – Sea otters have the densest fur of any animal. Weight of otter depends on their breed. 1. Four of the main otter species include the European otter, the North American river otter, the Sea otter, and the Giant otter. Floating on its back, it opens mollusks by smashing them on a stone balanced on its chest. The sea otter spends most of its time in the water but, in some locations, comes ashore to sleep or rest. North American Sea Otter is also more slender than other otter breeds. Here are five amazing facts about sea otters that you might not know! 1. The large hind feet are broad and flipperlike. Sea otters intelligently use everything they have to help them hunt and survive, including rocks and shells. Through to the large Giant otter and Sea otters who can reach 1.8 m (5.9 ft) and 45 kg (99.2 lb). Other than that they are incredibly cute, sea otters are intelligent as well. Some of the best known are the giant otter, the sea otter, the European otter, the Northern river otter among others. From feeding habits to ecosystem maintenance, sea otters are more than meets the eye. Sea otters reach maximum lengths of 4.9 feet (1.5 m) and weights of 100 pounds (45 kg). Interesting Facts About the Sea Otter. Sea otter, (Enhydra lutris), also called great sea otter, rare, completely marine otter of the northern Pacific, usually found in kelp beds. These marine mammals have a number of characteristics that make them perfectly suited for life at sea. 3. Otters are adorable creatures that live both on land and in the water. It is 40–65 inches (100–160 cm) long and weighs 35–90 pounds (16–40 kg). Baby sea otters are buoyant! Otter species range in size from the smallest Oriental small-clawed otter at 0.6 m (2 ft) and 1 kg (2.2 lb). Sea otters have the densest fur of all mammals with up to 1 million hairs per square inch. This ancient religion considered otters to be the dogs of the river or sea and had strict rules forbidding the killing of otters. Their sleek, streamlined bodies are perfect for diving and swimming. Sea otters mainly live in river basins. Fun Facts About Sea Otters. There are 13 species of otter found all around the world. Sea otters don’t have blubber or fat to keep them warm like other marine mammals. North American Sea Otters are larger than Asian otters. 2. Newborn sea otters weigh 3 to 5 pounds. Males weigh up to 90 lbs. 2. A sea otter pup’s fur traps so much air that they cannot dive underwater. Otter is a common name for a carnivorous mammal in the subfamily Lutrinae. ... been doing a number of things to keep myself upbeat about earning my diploma in either setting and found some really simple ways to handle the stress of all of it. 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