Their bodies are long and streamlined and their legs short. Northern River Otters are aquatic members of the weasel family that live in Connecticut. Their aquatic habitats can be both marine and fresh … 7. The Marine Mammal Protection Act protects sea otters. For one of the smallest marine mammals on Earth (yet the largest member of the weasel family), the sea otter has racked up quite a few superlatives: 10. Sea otters, Enhydra lutris (Linnaeus, 1758), are the largest member of the Family Mustelidae (70 species of river otters, skunks, weasels, badgers, etc.) It prohibits commercial harvest of sea otters, and allows Alaska natives to hunt sea otters for subsistence and creation of handicrafts. In order to maintain its body weight, a sea otter must eat 25% of its body weight per day. Conservation. They live in riparian zones, often in the same areas as beavers. The sea otter is one of the smallest marine mammals, but one of the largest members of the family Mustelidae, a group that includes skunks and weasels among others. Otters have broad flattened heads and prominent whiskers. A sea otter rests on its back with its head, arms and flippers in the air, and looks like two lumps close together. Ninety percent of the world’s sea otters live in Alaska’s coastal waters. Their tails are furred and muscular, broad at the base and narrow towards the tip. 1. Sea otters are carnivores in the family Mustelidae—a group of animals that also includes terrestrial and semi-aquatic forms such as weasels, badgers, skunks, fishers, minks, and river otters.Sea otters are the only fully aquatic form of otters, but they share features with the others such as thick fur and short ears. 6. The sea otter can live its entire life without leaving the water. The sea otter is the largest member of the weasel family and the smallest marine mammal. River otters generally live alone or in small social groups. Ninety percent of the world’s sea otters live in coastal Alaska. The tail comprises less than a third of the body length. The Southeast stock can be found in the coastal waters of Southeast Alaska. The longest recorded sea otter dive was 4 minutes, 2 and the deepest recorded sea otter dive was 318 feet (97 m) deep. Sea otters eat 25 percent of their body weight each day in sea urchins, crabs, clams, snails and other invertebrates. They have webbed feet equipped with claws. The North American river otter (Lontra canadensis), also known as the northern river otter or common otter, is a semiaquatic mammal endemic to the North American continent found in and along its waterways and coasts. Females are slightly smaller, weighing 14-33 kg and measuring 1-1.4 m in length. Males weigh 22-45 kg and are 1.2-1.5 m in length. Description . The Southcentral population spans from west of Glacier Bay to the eastern edge of Cook Inlet. and are the smallest marine mammal in North America. North American river otters were hunted and trapped extensively for their fur in the 19th and 20th centuries, and are still hunted in some places. River otters are found throughout most of North America from the Rio Grande to Canada and Alaska, except for in arid deserts and the treeless Arctic. 9. Sea otters use rocks to crack open their prey as fast as 45 blows in 15 seconds. They can live eight to nine years in the wild but have lived up to 21 years in captivity. Within Alaska, there are 3 stocks. An adult North American river otter can weigh between 5.0 and 14 kg (11.0 and 30.9 lb). Sea otters can sometimes be seen off sandy beaches — and even local harbors. 5. The sea otter can usually be found in kelp beds, and looks very much like lumps of kelp. 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