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The Vanishing Vaquita
The small vaquita (Phocoena sinus), a type of porpoise, usually only reaches...
Sharks have young in three different ways. After internal fertilization, some...
A Florida manatee, Trichechus manatus latirostris, swims down a narrow channel into...
Polar Bear on the Ice
Polar bears have evolved to survive in the Arctic with large, oar-like front paws...