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In Alaskan kelp forest ecosystems, sea otters are the keystone species that mediates this trophic cascade. In Southern California, kelp forests persist without sea otters and the control of herbivorous urchins is instead mediated by a suite of predators including lobsters and large fishes, such as the California sheephead.
The Alaskan subspecies of moose (Alces alces gigas) is the largest in the world; adult males weigh 1,200 to 1,600 pounds (542–725 kg), and adult females weigh 800 to 1,300 pounds (364–591 kg) [17] Alaska's substantial moose population is controlled by predators such as bears and wolves, which prey mainly on vulnerable calves, as well as by ...
Kelp may develop dense forests with high production, [27] [28] biodiversity and ecological function. Along the Norwegian coast these forests cover 5,800 km 2, [29] and they support large numbers of animals.
The team of divers was training in the giant kelp forests of eastern Santa Cruz Island in California’s Channel Islands National Park. Curious sea creature follows diver in kelp forest — and ...
The Cook Inlet population is found in the inlet and Shelikof Strait region, and numbers approximately 400 to 500 animals. The larger Bering Sea population ranges throughout the Bering, Chukchi, and Beaufort seas; this group comprises perhaps 25,000 animals. Alaska natives harvest small numbers of belugas for food and oil. [56] Gray whale
Alaska is the northwestern most part of North America. Reptiles and amphibians are not common in Alaska due to them being cold-blooded. Alaska has four reptile species and eight amphibian species. Two of these species are introduced. There are no snakes or lizards in Alaska. [1]
In 2007, a YouTube video of two cute sea otters holding paws drew 1.5 million viewers in two weeks, and had over 20 million views as of January 2015. [158] [159] Filmed five years previously at the Vancouver Aquarium, it was YouTube's most popular animal video at the time, although it has since been surpassed. [160]
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