Big Bend slider images - Joel Sartore

A Big Bend slider (Trachemys gaigeae) at the Tennessee Aquarium.

A Big Bend slider (Trachemys gaigeae) at the Tennessee Aquarium.

A Big Bend slider (Trachemys gaigeae) at the Tennessee Aquarium.

A Big Bend slider (Trachemys gaigeae gaigeae) at the Tennessee Aquarium. This species is listed as vulnerable by IUCN.

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National Geographic Photographer and Speaker