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The recently extinct Steller's sea cow was the largest known sirenian to have lived, reaching lengths of 10 metres (33 feet) and weights of 5 to 10 tonnes (5.5 to 11.0 short tons). [ 2 ] Sirenians have a large, fusiform body which reduces drag through the water and heavy bones that act as ballast to counteract the buoyancy of their blubber .
Manatees (/ ˈ m æ n ə t iː z /, family Trichechidae, genus Trichechus) are large, fully aquatic, mostly herbivorous marine mammals sometimes known as sea cows.There are three accepted living species of Trichechidae, representing three of the four living species in the order Sirenia: the Amazonian manatee (Trichechus inunguis), the West Indian manatee (Trichechus manatus), and the West ...
A humpback whale (Megaptera novaeangliae) A leopard seal (Hydrurga leptonyx). Marine mammals are mammals that rely on marine (saltwater) ecosystems for their existence. They include animals such as cetaceans (whales, dolphins and porpoises), pinnipeds (seals, sea lions and walruses), sirenians (manatees and dugongs), sea otters and polar bears.
And in the summer months, the “sea cows” form “mating herds,” often in shallow waters close to the shore, according to the Florida Fish and Wildlife Conservation Commission.
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Commercial hunting lead to the extinction of Steller's sea cow and the Caribbean monk seal. [ 36 ] [ 37 ] After commercial hunting ended, some species, such as the gray whale and northern elephant seal, [ 38 ] [ 39 ] have rebounded in numbers, however the northern elephant seal has a genetic bottleneck ; [ 39 ] conversely, other species, such ...
Male orphaned manatees Nighthawk, who weighs 678 pounds, and Mr. Dobak, who weighs 497 pounds, were flown to Seaworld Orlando this week to finish their rehabilitation before being released into ...
The dugong (/ ˈ d (j) uː ɡ ɒ ŋ /; Dugong dugon) is a marine mammal.It is one of four living species of the order Sirenia, which also includes three species of manatees.It is the only living representative of the once-diverse family Dugongidae; its closest modern relative, Steller's sea cow (Hydrodamalis gigas), was hunted to extinction in the 18th century.