Axel Gomille,Axel Gomille / Goat keeper with baby and domestic goat (Capra aegagrus hircus) Thar Desert, Rajasthan, India

Paul D Stewart / Male Large Blue Butterfly (Maculinea eutryphon / arion) collected in 1865. It is here surrounded by other extant UK blue butterfly species. The large Blue was first recorded as a British species in 17...

Norbert Wu / Small-toothed Rock Hyrax (Heterohyrax brucei) group lounging around pool at Mara Serena lodge, closest living relative of the Elephant, feet possess hoof-like nails, Kenya

Norbert Wu / Australian Ghost Shark (Callorhinchus milii) trunk-like snout detects prey in sea bottom, primitive fish relative to sharks, lives in the deep sea, New Zealand

John Cancalosi / Shetland Pony. Native breed of Shetland Islands, Scotland, UK Probably strongest horse relative to its size.

Jeff Rotman / Children in jaws of Megalodon - prehistoric Great white shark relative, Australia Model released.

Doug Perrine / Pelagic nudibranch / Blue sea slug (Glaucus atlanticus) along with a much smaller relative, (Glaucilla sp) feeding on a Portuguese man o' war, (Physalia utriculus) Kona, Hawaii, Hawaiian Islands,...

Lynn M. Stone / English springer spaniel, three standing with front legs on rock, Rhododendron flowers in background. Haddam, Connecticut, USA. June.

Doug Perrine / Blue dragon / Blue seaslug (Glaucus atlanticus) feeding on a Portuguese man o' war (Physalia utriculus) along with a much smaller relative, Glaucilla sp. (upside down); Glaucus and Glaucilla store th...

Jack Dykinga / Grandmother and grandson standing next to Strangler fig (Ficus padifolia) covering the wall of their home, Aduana, near Alamos, Sonora, Mexico 1992

Ingo Arndt / Fossil of Trilobite {Elrthia kingii} oldest relative of spiders, Utah, USA. Cambrian period.

Philippe Clement / Grandfather with two children watching birds from hide in the Zwin Nature Park, bird sanctuary at Knokke-Heist, West Flanders, Belgium, July 2016