brackish water images - Joel Sartore

Horned nerite snail (Clithon corona) from a private collection.

Horned nerite snail (Clithon corona) from a private collection.

Northern pike (Esox lucius) at the University Lab at the University of Minnesota in St. Paul.

Northern pike (Esox lucius) at the University Lab at the University of Minnesota in St. Paul.

Northern pike (Esox lucius) at the University Lab at the University of Minnesota in St. Paul.

A four-eyed fish (Anableps anableps) at the Oklahoma City Zoo.

A four-eyed fish (Anableps anableps) at the Oklahoma City Zoo.

Four-eyed fish (Anableps anableps) at the Oklahoma City Zoo.

National Geographic Photographer and Speaker