Ingo Arndt / Pea aphid (Acyrthosiphon pisum) giving birth (viviparous during the summer month), Germany. Winner of Fritz Polking portfolio prize, GDT 2012 competition.

Laurie Campbell / Common / Viviparous lizard (Zootoca vivipara) mother with young. Burnmouth, Berwickshire, England, UK.

Claudio Contreras / Mexican blind brotula (Typhliasina pearsei) a blind cave fish, sinkhole near Tulum, Yucatan Peninsula, Mexico, August. Endangered species.

Danny Green / 2020VISION / Viviparous / Common lizard (Zootoca /Lacerta vivipara) portrait, Staffordshire, England, UK, April. 2020VISION Book Plate. Did you know? Common lizards are both able to lay eggs and give birth.

Danny Green / 2020VISION / Viviparous / Common lizard (Zootoca / Lacerta vivipara) basking in the early spring, Staffordshire, England, UK, April. Did you know? Common lizards live further north than any other reptile species.

Paul Hobson / Common lizard (Lacerta vivipara) head close up in moss, Peak District, England, UK.

Tony Phelps / Newborn Adder still in membrane {Vipera berus} Dorset, UK

Rod Williams / Moorean viviparous tree snail {Partula suturalis} extinct in Moorea

Bernard Castelein / Viviparous lizard (Zootoca vivipara), male basking on lichen covered rock. Cote d'Opale / Opal Coast, France. May.

Bernard Castelein / Viviparous lizard (Zootoca vivipara), male on lichen covered rocks, portrait. Cote d'Opale / Opal Coast, France. May.

Fabio Pupin / Viviparous lizard, (Zootoca vivipara), close-up of the head, Alps, Italy, September . Non-ex.

Fabio Pupin / Viviparous lizard, (Zootoca vivipara), Alps, Italy, August . Non-ex.