sea otters live in kelp forests.Sea otters like to eat crab octopie but their favourite food is the spiny purple sea urchin.Sea otters like The charismatic otter, a member of the weasel family, is found on every continent except Australia and Antarctica. Otters are very active hunters, spending many hours a day chasing prey through water or scouring the rivers and the sea bed. 3 Otters have their cubs in underground dens called holts, which they dig themselves.They will also use hollows under trees or old rabbit holes. 16 Playful Facts About Otters. Some otter species spend all their time in the water while others are land and water based animals. google_ad_width = 728; There are 13 species of otters, in seven genera, according to Integrated Taxonomic Information System (ITIS). 1. google_ad_client = "pub-4643150179421087"; Four of the main otter species include the European otter, the North American river otter, the Sea otter, and the Giant otter. Because they spent so much time in cold water, they have to groom their fur often to stop themselves from freezing. Sea otter is the heaviest mustelid with the weight measuring at 22 â 45 kg (49 â 99 lb) in males; and the length measures around 1.2 â 1.5 m (3 ft 10 in to 4 ft 10 in). Sea otters have also been hunted in large numbers for their fur. Mishka is an asthmatic otter who uses an inhaler. A raft is usually comprised of single-sex sea otters that can range from 10 to a hundred individuals. Otters talk to other animals and otters with whistles, growls, chuckles and screams, as well as chirps, squeals, and some kinds of otters might even purr. This traps a layer of air which keeps them dry and warm under water. They are a part of the animal family Mustelid.