Mathematics, Science . In order to capture food, sea otters dive to the bottom in 5 to 250 feet (1.5 to 75 meters) of 3-LS4-3 . A Sea Otter's Diet. Decline in Alaskan Sea Otters Affects Bald Eagles' Diet 25-Sep-2008 1:50 PM EDT , by Ecological Society of America Edit Institution favorite_border Bald eagles’ diet was once predominantly sea otter pups and kelp forest fish. and Japan. Without sea otters, sea urchins can overpopulate the sea floor and devour the kelp forests that provide cover and food for many other marine animals. Sea otters wrap themselves in kelp while resting. An otter must consume approximately 25% of its bodyweight in prey each day just to stay alive (for a 75 pound kid, that would amount to eating 75 quarter pound hamburgers every day!). lot of food so that they stay healthy. Sea otters consume a wide variety of benthic invertebrates. In the late 1960s, 403 sea otters were transplanted to several locations in Southeast Alaska, and the population began a remarkable recovery. The sea otter, Enhydra lutris, has a very effective method for catching food. Females and pups spend time in one group, while males spend time Well, carrying on from this, I thought that I would follow-up with the initial results from a personal study. themselves in order to keep their fur in good condition. Sea otters in another. © 2004 Kids Do Ecology, NCEAS, 735 State Street, Santa Barbara, Secondly, oil spills result in the death of sea otters. River otters belong to the weasel family. Sea otters are the smallest marine mammals. March and in Alaska pups are usually born during late spring. What do the arrows that connect each organism plant to animal or animal to animal represent in a food web. areas in the North Pacific Ocean. Some of these animals have hard shells, which protect them from predators. California 93101. Us Sea otters have the thickest fur of any marine mammal, averaging 850,000 to 1,000,000 hairs per square inch! River otters possess long, muscular bodies suited to their life on both land and in water. Home | Learn Sea otters are estimated to have once numbered between 150,000-300,000 individuals and their range stretched from Baja California, Mexico, around the northern Pacific Rim to Japan. An average giant otter will weigh between 22 and 32kg (49-71lbs).. 2038 NE 135th, Seattle, WA 98125. Its use of rocks to dislodge prey and to open shells makes it one of the only mammal species to use tools. Females are smaller at 1-1.5m (3.3-4.9ft). If the prey has a hard outer shell, the otter will hit it against a rock Birds and birds’ eggs, as well as small terrestrial mammals may also be eaten. The sea otter gets ready to dive, and with a huge breath, leaps into the water. These mammals have whiskers, which they use to spot their prey by detecting vibrations in the water. Sea otters mainly eat sea urchins, crabs, clams, mussels, octopus, other marine A much larger population exists in Alaska A very small relocated population resides in Sea otters eat a wide variety of prey, including marine invertebrates such as echinoderms (sea stars and sea urchins), crustaceans (e.g., crabs), cephalopods (e.g., squid), bivalves (clams, mussels, abalone), gastropods (snails), and chitons. She brings the sea otter live fish because she knows that sea otters will not eat anything that is dead. approximately 15 to 20 years. Once an otter food. In fact, sea otters eating is what they're best known for—besides being extremely cute. Sea otters are ‘’keystone species” because of their critical role in maintaining the health and stability of the nearshore marine ecosystems. A cormorant may follow the sea otter, and from the otters upturning of rocks, … Background Information . Sea otters Sea otters are social animals. I posted last week about the dietary habits of the Otter (Lutra lutra). The specific role of the sea otters in the eco-system is as follows; 1. Sea otters use a rock or hard object to break open shellfish or other food. Sea otters always eat in the water and never on Prey items include sea urchins, abalone, crabs, mussels, clams, marine snails, marine worms, sea stars, and squid. Sea Otters - The Ocean's Furry Friend,79€ 9: Kein Kinderkram! (Hunting by Alaska natives is permitted outside the park, although pelts may not be sold except to other Alaska natives). Sea otter diet consisted of 46% clam, 21% mussel, 4% crab, 15% urchin, and 14% other or unidentified prey. When a sea otter swims their feet move faster than the rest of their body, concluding that they suffer more heat loss. to pods of more than 1,000 animals. A feeding dive usually lasts from less than a minute to as long as 5 minutes or more. Southern sea otter consumes many types of prey including sea urchins, snails, clams, abalone, mussels, crabs, scallops, fish, barnacles, octopus, worms, and squid, which it captures with its clawed paws, not its jaws. They have This tail serves to propel the otters through water. It turns out that some individuals are generalists meaning they like to eat many kinds of prey while others are specialists, meaning they are picky eaters! Adult female sea otters weigh 30 - 60 pounds Moss Landing Marine Laboratories, P.O. They live in wet areas such as coastlines, oceans and marshes. Sea Otters eat up to a third of their body weight daily and have a … Sea otters (scientific name: Enhydra lutris) can be found in shallow water Their toes are webbed, they have short legs and they boast a tapered tail ranging up to 15 inches long. Sea otters eat mostly marine invertebrates such as sea urchins, various molluscs and crustaceans, and some species of fish. It swims to the bottom, and starts searching for food. Significant immigration in addition to reproduction within Glacier Bay must be occurring. Its not only the abundance of a particular food source that is important but also how easy it is to catch. Sea otters are found almost everywhere in the world. exists in Russia. To meet it’s high energetic and thermoregulation demands, a sea otter’s metabolic rate is 2 to 3 times that of comparatively sized mammals. To survive in their cold-water environment, sea otters must consume 20-30% of their body weight in food daily. How has the growing sea otter population affected the marine environment? A Sea Otter's Diet Sea otters eat a wide variety of prey, including marine invertebrates such as echinoderms (sea stars and sea urchins), crustaceans (e.g., crabs), cephalopods (e.g., squid), bivalves (clams, mussels, abalone), gastropods (snails), and chitons. Most of their food is found in or near kelp beds. River otters are smaller than their cousins, the sea otters. Their body shape aids in helping them make sudden turns to catch fish and other prey. Sea otters began to colonize Glacier Bay proper in 1993. Diet. Sea otters are members of the weasel or Mustelidae family and are Horn sharks, which live on the seabed, have a similar diet to sea otters and have a powerful bite, but it was not able to defend itself here as the animal was already dead. Main Characteristics Of The Sea Otters Anatomy. Our otters at the sanctuary are fed a variety of fish including salmon, trout, eels and a food mix consisting mostly of … Unlike a sea otter from Alaska, the southern sea otter doesn't eat fish. In addition, the northern sea otter eats … A high number population of sea urchin can be reduce and reach its normal number of population because sea otter feeds on it. 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