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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 ...
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 .
This led to the extinction of the Steller's Sea Cow and the Caribbean monk seal. [3] Today, populations of species that were historically hunted, such as blue whales Balaenoptera musculus and B. m. brevicauda), and the North Pacific right whale (Eubalaena japonica), are much lower compared to their pre-exploited levels. [4]
Afrotheria (/ æ f r oʊ ˈ θ ɪər i ə / from Latin Afro-"of Africa" + theria "wild beast") is a superorder of placental mammals, the living members of which belong to groups that are either currently living in Africa or of African origin: golden moles, elephant shrews (also known as sengis), otter shrews, tenrecs, aardvarks, hyraxes, elephants, sea cows, and several extinct clades.
The West Indian manatee is the largest living member of the sirenians (order Sirenia), a group of large aquatic mammals that includes the dugong, other manatees, and the extinct Steller's sea cow. Manatees are herbivores , have developed vocal communication abilities, and are covered in highly sensitive whiskers (called vibrissae ) that are ...
A rare fossil has provided a snapshot of what was an exceptionally unlucky day for a prehistoric sea cow. The now-extinct species of dugong, a manatee-like marine mammal, was swimming in the sea ...
The sugar in candy won't have a bad effect on the cow or the human eating it, Chuck Hurst, a livestock nutritionist, told CNN. Farmers really do feed their cows Skittles — here's why.
To the present, almost all have remained tropical (with the notable exception of Steller's Sea Cow), marine and angiosperm consumers. Sea cows are shallow divers with large lungs. They have heavy skeletons to help them stay submerged; the bones are pachyostotic (swollen) and osteosclerotic (dense), especially the ribs which are often found as ...