A lioness reacts to being darted with a tranquilizer.
A biologist radio collars a lioness in the Ishasha Section of Queen Elizabeth National Park.
A piping plover (Charadrius melodus). (US: Endangered)
Biologists capture endangered Florida manatees to do blood work and tagging at Apollo Beach, Florida.
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Joel is the founder of the Photo Ark, a groundbreaking effort to document every species in captivity before it’s too late.
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