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Polar bears at play
Polar bear siblings in the Churchill Wildlife Management Area near Hudson Bay spar...
Tardigrades, which are usually less than 1 mm long, can be found in almost every...
The Vanishing Vaquita
The small vaquita (Phocoena sinus), a type of porpoise, usually only reaches...
A Florida manatee, Trichechus manatus latirostris, swims down a narrow channel into...