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

Jim Brandenburg / Painted Turtle (Chrysemys picta) group sunning on log, Minnesota

Jim Brandenburg / Painted Turtle (Chrysemys picta) trio sunning on log, Minnesota

John Cancalosi / Painted turtle (Chrysemys picta) on log in water. Maryland. September.

John Cancalosi / Northern red-bellied turtle (Pseudemys rubriventris), Maryland, USA. May.

John Cancalosi / Snapping turtle (Chelydra serpentina) and Painted turtle (Chrysemys picta) with discarded plastic bottle, Maryland, USA. July. Label on bottle digitally removed.

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

John Cancalosi / Painted turtle (Chrysemys picta) eating algae off the carapace of a Snapping turtle (Chelydra serpentina) Maryland, USA, August.

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