Doug Wechsler / Diamondback terrapin (Malaclemys terrapin) on beach, Delaware Bay, New Jersey, USA, July.

Doug Wechsler / Diamondback terrapin (Malaclemys terrapin) female laying eggs, Delaware Bay, New Jersey, USA, July.

Doug Wechsler / Diamondback terrapin (Malaclemys terrapin) female on beach, Delaware Bay, New Jersey, USA, June.

Francisco Marquez / Spanish terrapin (Mauremys leprosa) entering a pond, Extremadura, Spain, December.

Francisco Marquez / Spanish terrapin (Mauremys leprosa) basking, Extremadura, Spain, December.

Nick Upton / Young Western Caspian pond turtle / Balkan stripe-necked terrapin (Mauremys caspica rivulata) swimming in a pond with its head above water, Isle of Lesbos / Lesvos, Greece, May.

Nick Upton / Two Western Caspian pond turtles / Balkan stripe-necked terrapins (Mauremys caspica rivulata) swimming in a pond with their heads above water, Isle of Lesbos / Lesvos, Greece, May.

Doug Wechsler / Diamondback terrapin (Malaclemys terrapin) swimming in salt marsh channel, The Glades Wildlife Refuge, New Jersey, USA, June.

John Cancalosi / Diamondback terrapin (Malaclemys terrapin), Washington DC, USA. Captive

John Cancalosi / Diamondback terrapin (Malaclemys terrapin), Washington DC, USA. Captive

Roland Seitre / Annam Leaf Turtle (Mauremys annamensis) portrait, captive. Critically endangered. Endemic to Vietnam.

Michael D. Kern / Diamondback terrapin, (Malaclemys terrapin) captive from USA