Franco Banfi / Freshwater turtle (Trachemys scripta venusta) swimming amongst Water lilies leaves, Gran Cenote, near Tulum, Quintana Roo, Yucatan Peninsula, Mexico.

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

Claudio Contreras / Mesoamerican slider turtle / terrapin (Trachemys scripta venusta) in sinkhole, Cenote Carwash, near Tulum, Yucatan Peninsula, Mexico, January

Claudio Contreras / Mesoamerican slider turtle / terrapin (Trachemys scripta venusta) in sinkhole, Cenote Carwash, near Tulum, Yucatan Peninsula, Mexico, January

Sergio Hanquet / Gulfweed crab (Planes minutus), epibiont on Loggerhead turtle (Caretta caretta). Tenerife, Canary Islands.

Cyril Ruoso / Red-eared slider (Trachemys scripta elegans) and Grass snake (Natrix natrix) basking on log. Seine et Marne, Ile-de-France. May.

George Sanker / Florida red-bellied cooter turtle (Pseudemys nelsoni) feeding on Water lily (Nymphaeaceae) flower. Everglades National Park, Florida, USA. March.

George Sanker / Florida red-bellied cooter turtle (Pseudemys nelsoni) feeding on Water lily (Nymphaeaceae) flower. Everglades National Park, Florida, USA. March.

George Sanker / Florida red-bellied cooter turtle (Pseudemys nelsoni) feeding on Water lily (Nymphaeaceae) flower. Everglades National Park, Florida, USA. March.

David Pattyn / European Pond Terrapin (Emys orbicularis), Kresna gorge, South West Bulgaria

Franco Banfi / Freshwater turtle (Trachemys scripta venusta) swimming under Water lilies leaves, Gran Cenote, Tulum, Quintana Roo, Yucatan Peninsula, Mexico.

Franco Banfi / Freshwater turtle (Trachemys scripta venusta) swimming in Gran Cenote, near Tulum, Quintana Roo, Yucatan Peninsula, Mexico.