Other than that they are incredibly cute, sea otters are intelligent as well. North American Sea Otter is also more slender than other otter breeds. Sea otters have many ways to survive, and live in specific living conditions, and eat many things. There are 13 species of otter found all around the world. This distinction goes to the sea otter. Sea otters have the densest fur of all mammals with up to 1 million hairs per square inch. 3. They usually weigh between 7 to 31 pounds (3 – 14 kg). Otter is a common name for a carnivorous mammal in the subfamily Lutrinae. Females can give birth any time of the year, but most in California have their pup between January and March. A sea otter pup’s fur traps so much air that they cannot dive underwater. 1. 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 intelligently use everything they have to help them hunt and survive, including rocks and shells. North American Sea Otters are larger than Asian otters. Through to the large Giant otter and Sea otters who can reach 1.8 m (5.9 ft) and 45 kg (99.2 lb). Four of the main otter species include the European otter, the North American river otter, the Sea otter, and the Giant otter. Some of the best known are the giant otter, the sea otter, the European otter, the Northern river otter among others. Most sea otters measure less than 50 inches. Their sleek, streamlined bodies are perfect for diving and swimming. 2. The smallest otter is the Asian small-clawed otter, which grows up … Otters are adorable creatures that live both on land and in the water. ... 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. These marine mammals have a number of characteristics that make them perfectly suited for life at sea. Sea otters don’t have blubber or fat to keep them warm like other marine mammals. Sea otter, (Enhydra lutris), also called great sea otter, rare, completely marine otter of the northern Pacific, usually found in kelp beds. This ancient religion considered otters to be the dogs of the river or sea and had strict rules forbidding the killing of otters. From feeding habits to ecosystem maintenance, sea otters are more than meets the eye. Sea otters mainly live in river basins. At about 4 or 5 years old, female sea otters typically have their first pup after a four-to-five-month-long pregnancy. Males weigh up to 90 lbs. The Furriest of Fur Coats – Sea otters have the densest fur of any animal. It is 40–65 inches (100–160 cm) long and weighs 35–90 pounds (16–40 kg). Interesting Facts About the Sea Otter. Here are five amazing facts about sea otters that you might not know! Newborn sea otters weigh 3 to 5 pounds. 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