Alex Mustard / Suwanee freshwater turtle (Pseudemys concinna suwanniensis) swimming beneath trees in a freshwater spring. Devil Spring, Ginnie Springs, High Springs, Florida, USA

John Cancalosi / Snapping turtles (Chelydra serpentina) with Red-eared sliders (Pseudemys rubriventris) and River cooter (Pseudemys concinna) and Bluegills (Lepomis macrochirus), Maryland, USA, June.

Alex Mustard / Portrait of a Suwanee cooter (Pseudemys concinna suwanniensis) in a freshwater spring. Gilchrist Blue Springs State Park, High Springs, Florida, USA

Alex Mustard / Portrait of a Suwanee cooter (Pseudemys concinna suwanniensis) in a freshwater spring. Gilchrist Blue Springs State Park, High Springs, Florida, USA

Alex Mustard / Suwanee freshwater turtle (Pseudemys concinna suwanniensis) swimming beneath trees in a freshwater spring. Devil Spring, Ginnie Springs, High Springs, Florida, USA

Alex Mustard / Suwanee freshwater turtle (Pseudemys concinna suwanniensis) swimming beneath trees in a freshwater spring. Devil Spring, Ginnie Springs, High Springs, Florida, USA

George Sanker / Florida cooter (Pseudemys concinna floridana) looking at Spatterdock waterlily (Nuphar advena), Everglades National Park, Florida, USA, March.

Scott Leslie / Eastern River Cooter (Pseudemys concinna), North Carolina

John Cancalosi / Eastern river cooter (Pseudemys concinna concinna) Louisiana, USA, July.

Barry Mansell / Eastern River Cooter (Pseudemys concinna concinna) Chipola River, West Florida, USA

Todd Pusser / Portrait of Florida cooter {Pseudemys concinna floridana), North Carolina, USA

Edwin Giesbers / Suwannee river cooter freshwater turtle (Pseudemys concinna) half submerged in water. Captive, occurs in the USA