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Sea otter community
Sea otters as a keystone species
Decline of sea otters
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It's been an interesting last.. Hmm? 40 years I would say, for the Sea Otter. Sea otters, are a
common animal most people hear about, but not many people actually know about. This is all
about a sea otters history, an ecosystem, and why they are in fact endangered. Sea otters however
have made a comeback and for the majority are not at risk anymore and aren't expected to be
anytime soon.
Sea otters are a very common yet diverse animal. They
are the only aquatic member of the weasel family. Since
the 1970's sea otters have become much more popular with
researchers and by entertaining people. There are 3 type of
recognized sea otters including the The Russian Northern
sea otter, The northern sea otter, and the southern sea otter.
Sea otters spend the majority of their time in the ocean but sometimes come ashore to rest.
They have water-repellent fur to keep their warm, webbed feet, and ears and nostrils that close
when in water. They're thick fur makes there body seem much thicker on land, than how it looks
in water. It also keeps them from possibly getting hypothermia from temperatures of water. They
have 600,000-700,000 hairs per square inch to make up for having no blubber. There are 3 type
of recognized sea otters including the The Russian Northern sea otter, The northern sea otter, and
the southern sea otter. Sea otters are in fact mammals. Adult (southern) sea otters can weigh
between 45-65 lbs and are some of the smallest marine mammals, considering they only grow to
4 feet. They spend a lot of their time grooming, cleaning, squeezing our water, and also blowing
on their fur. They do a lot of their work and foraging by sunrise, and usually are resting by mid- day. They are a threatene...
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...w after the fur trade it's taken them about 200 years to slowly repopulate. They are
one of the most diverse species and lucky for Seagrass and kelp habitats, sea otters have been
making a big comeback. Cambria California has and will continue helping sea otters. Also, the
Canbria SMCA will continue so. And the biggest help of all is the Endangered Species Act. They
and the Sea Otter fund continue to help out the research and get contribution from taxes for The
Sea Otters. And they continue to not allow killing of sea otters and keep trying to restore their
health. Sea otters will continue to live happy lives repopulating and restoring. If you contribute
to the sea otter fund and pitch in to keep their continual protection, whether you believe it or not,
you too can make a different for these happy sea creatures, the amount of fish from kelp and
Kirby, David. "SeaWorld's Worst Nightmare: Calif. Lawmaker to Propose Ban on Orcas in Captivity." TakePart. N.p., 6 Mar. 2014. Web. 23 Mar. 2014. .
"Pro and Con Captivity for Orcas in Sea World." Teen Ink. N.p., n.d. Web. 14 Mar. 2014. .
There has been a steep decline in sea otter populations due to water pollution and exploitation of furs. This has adversely affected marine ecology. It is therefore suggested that sea otters should be included in the endangered species list to protect them from further exploitation. This study focuses on the community ecology of sea otters and their impact on marine ecology. The need for their inclusion in the Endangered Species list and the implications of such an intervention are also evaluated.
This year they are listed under the endangered species act and has today 78 killer whales left. The factors that could be contributed to such a rapid change in the size of sea otter population is stop hunting sea otter down and killing them and selling them to fur traders.That is the big thing in the otter decline people from 1800 to 1900 hunted and sold them all time for there fur. killer Whales have a taste for sea otters and the sea lion and seals short in supply in the northern pacific. Killer whales are feeding on otters because of the absents of their prey. The lost of sea otters have effect on organism is Alaska’s sea otters decline the affects health of kelp forests and diet of eagles. Sea otters play a private part by keeping the kelp forest a healthy balance. By eating sea urchins-- the biggest threat to kelps forests--sea otters control sea urchins numbers and kept the ecosystem in balance. This ensured that these underwater plants could thrive and reach their maximum height of 250 ft.The sharp drop in sea otter numbers in this island chain of alaska is the predation level. killer whales need 61.54 kcal/male otters and kcal needed is 308000 kcal
As an act of frustration, they take their teeth and rake other whales’ bodies. They would be covered head to tail with rake marks. Park guests would sometimes recall that during shows they could see blood, due to severe rake marks
They helped save them by creating a biological reserve on the island in 1922. They are fully protected by the mexican national legislation so they can’t be hunted and killed. Also, the marine mammal center had rescued a total of 55 guadalupe fur seals since 1975 to help keep from extinction. Now, there are around 7,000 guadalupe fur seals left.
Save the World: Save the sea otters During the 18th and 19th centuries, sea otters were hunted for their luxurious pelts, and by the early 1900s, the species was believed to be extinct in California. (Carswell) Why do we care you ask, well not only are they super cute and eat with their hands. Apparently, a healthy population of sea otters keeps the sea urchin population in check. An unhealthy or small population of sea otters allows the sea urchin’s number to explode thus decimating kelp beds, which is the sea urchin’s food source, and causing a “chain reaction that depletes the food supply for other marine animals consequently causing their decline.
Bottle-nosed dolphins are generally coastal creatures, occurring along almost all tropical and temperate coasts, although offshore varieties also occur. In addition, the Bottle-nosed dolphin is called the "all-ocean" dolphin, meaning that it lives in every ocean. It is common for a school of 20 dolphins to live together in coastal regions, but school of 200 dolphins are found in the offshore verities. These schools do not seem to have a leader and generally stay together for life.
Lawniczak, Mara K. "Critter Catalog." BioKIDS. University of Michigan-Ann Arbor, 2002. Web. 27 Mar. 2014.
The research that has been done on orcas in the wild and in captivity provide enough
1 The sea otter is endangered because of oil spills in 1977. Tons of otters where hurt and were sent to the Marine Mammal. Under state law, southern sea otters are "fully protected" mammals. Southern Sea Otters are one of the smallest marine animals. Their fur is thick but soft when dry but in cold waters the thickness keeps them warm. The thing they eat are sea urchins, abalone, mussels, clams, crabs, snails and at least 40 other marine species. 2 Sea otters exhibit numerous adaptations which help them survive in their challenging marine environment. Long whiskers help them to detect vibrations in murky waters. Did you know that the sea otter is part of the weasel family and is the second biggest? Mating happens all throughout the year. Sea
In the world where people live in is an enormous responsibility but also the greatest gift that people need to cherish and protect. The human race needs to step up and voice not only their concerns, but the concerns of all the animals endangered or not. Any species which fall into the categories vulnerable, endangered, or critically endangered are considered to be at risk of extinction. {Robert Redford} said “I think the environment should be put in the category of our national security defense of our resource’s because it’s just as important as defense abroad otherwise what is there to defend?”
The second fact is the interesting history and serial of this animal. “The red wolf
Sikes, Roberts. and William L. Gannon. "Guidelines of the American Society of Mammalogists for the Use of Wild Mammals in Research." Journal of Mammalogy 92.1 (Feb. 2011): 235-253. Academic Search Premier. EBSCO. Web. 5 Oct. 2011.
The polar bear is one the largest members of the bear family. Males Polar Bears stand from eight to 11 feet tall and generally weigh from 500 to 1,000 pounds, but can weigh as much as 1,400 pounds. Female bears generally stand eight feet tall and weigh 400 to 600 pounds, except some, which can reach 700 pounds. The reason the polar bear weighs so much is that is stores about a four-inch layer of fat to keep it warm.