Ross Hoddinott / 2020VISION / Volunteer, Aline Denton, cutting back brambles and blackthorn as part of the farm's conservation management, Denmark Farm, Lampeter, Wales, UK. June 2011. Model released

Danny Green / 2020VISION / Red deer (Cervus elaphus) hind with two Jackdaws (Corvus monedula) on her back, Richmond Park, London, England, UK, October. Photographer quote: "Everything in nature is connected. These two jackdaws...

Mary McDonald / Violet Sabrewing Hummingbird (Campylopterus hemileucurus) male hovering at feeder, Bosque de Paz, Costa Rica, Central America.

Stephen Dalton / Meadow grasshopper (Chorthippus parallelus) leaping, UK

Pete Oxford / Red and Green Macaw (Ara chloroptera) flying, wings spread, back view, wild, ranges from humid east Panama to Brazil, east Peru, north-east Bolivia and Paraguay, Cerrado habitat, Mato Grosso do Sul, B...

Albert Lleal / Brazilian Waterweed (Egeria densa) leaf showing chloroplasts and cell walls

Albert Lleal / Soft Hornwort (Ceratophyllum submersum) leaf showing chloroplasts and cell walls

Mark MacEwen / Green Sea Turtle (Chelonia mydas) Dead while trying to return to the sea after egg laying, Raine Island, Great Barrier Reef, Australia. There are Coral walls on the island that when the turtles head b...

Mark MacEwen / Green Sea Turtle (Chelonia mydas) Dead while trying to return to the sea after egg laying, Raine Island, Great Barrier Reef, Australia. There are Coral walls on the island that when the turtles head b...

Mark MacEwen / Green Sea Turtle (Chelonia mydas) Dead while trying to return to the sea after egg laying, Raine Island, Great Barrier Reef, Australia. There are Coral walls on the island that when the turtles head b...

Mark MacEwen / Green Sea Turtle (Chelonia mydas) Dead while trying to return to the water after egg laying, Raine Island, Great Barrier Reef, Australia. There are Coral walls on the island that when the turtles head...

Ernie Janes / Domestic sheep (Ovis aries) lambs in meadow one jumping off ewe's back, Norfolk, UK, March.

Danny Green / Brown Hare (Lepus europaeus) walking with ears folded back. Derbyshire, UK, March.

Danny Green / Brown Hare (Lepus europaeus) portrait, sitting on haunches with ears back. Derbyshire, UK, March.

Andrew Parkinson / 2020VISION / Bearded tit Panurus biarmicus Portrait of an adult male perched on a bullrush Rainham Marshes RSPB Reserve, London, UK

Alex Mustard / 2020VISION / Mouth and tentacles of Jewel anemone (Corynactis viridis) photographed under blue light to show fluorescence, Plymouth Sound, Devon, UK, July, Note tiny amphipods living inside anemone. Did you know?...

Ross Hoddinott / 2020VISION / Volunteer, Aline Denton, cutting back brambles and blackthorn as part of the farm's conservation management, Denmark Farm, Lampeter, Wales, UK. June 2011. Model released

Ross Hoddinott / 2020VISION / Volunteer, Aline Denton, cutting back brambles and blackthorn as part of the farm's conservation management, Denmark Farm, Lampeter, Wales, UK. June 2011. Model released

Ross Hoddinott / 2020VISION / Volunteer, Aline Denton, cutting back brambles and blackthorn as part of the farm's conservation management, Denmark Farm, Lampeter, Wales, UK. June 2011. Model released

Hiroya Minakuchi / Reticulated Glass Frog (Hyalinobatrachium valerioi) camouflaged on leaf, Costa Rica

Mark Moffett / Metallic Green Bee (Agapostemon sp) buzz pollinates Horned Nightshade (Solanum rostratum) flower while feeding on nectar. The vibration shakes free pollen that will feed larvaa back at the nest, Arizo...

Juergen Freund / Green turtle (Chelonia mydas) female struggling to make her way back to sea after laying eggs on the beach. The strong morning sun and very low tide create problems for her, Moromaho Island, South Sul...

Danny Green / 2020VISION / Red deer (Cervus elaphus) hind chasing Jackdaw (Corvus monedula) off her back, Richmond Park, London, England, UK, October

Konrad Wothe / Licuala Fan Palm (Licuala ramsayi) frond and leaf shadow, Daintree National Park, North Queensland, Queensland, Australia

Konrad Wothe / Licuala Fan Palm (Licuala ramsayi) fronds, Daintree National Park, North Queensland, Queensland, Australia

Murray Cooper / Treehopper (Bocydium sp) group, Amazon, Ecuador

Wild Wonders of Europe / Maitland / Balkan wall lizard (Podarcis taurica) close-up of back, Stenje region, Galicica National Park, Macedonia, June 2009

Stephen Dalton / Green poison dart frog (Dendrobates auratus) carrying tadpole on its back, Costa Rica

John Cancalosi / Green frog (Rana clamitans) tadpole, intermediate stage of growth with back legs, New York, USA, captive

John Cancalosi / Green frog (Rana clamitans) tadpole, intermediate stage of growth with back legs emerging, New York, USA, captive

Rolf Nussbaumer / Close up of eyespot on back wing of American moon / Luna Moth (Actias luna) New Braunfels, Texas, USA, March 2008

Jack Dykinga / Back-lit vein patterns on a broad-leafed Xanthosoma plant in the cloud forest of El Cielo Biosphere Reserve, Tamaulipas, Mexico

Keith-Nels Swenson / Dew on wheat, New Zealand

Patrick Morris / Cameraman Barrie Britton filming female Green Turtle {captivehelonia mydas} on her way back to the sea after laying eggs, Quinta Playa, Isabela Is, Galapagos, 2006

Patrick Morris / Cameraman Barrie Britton filming female Green Turtle {Chelonia mydas} on her way back to the sea after laying eggs, Quinta Playa, Isabela Is, for tv seires on Galapagos, 2006

Patrick Morris / Cameraman Barrie Britton filming female Green Turtle {Chelonia mydas} on her way back to the sea after laying eggs, Quinta Playa, Isabela Is, for tv series on Galapagos, 2006

Patrick Morris / Female Green Turtle {Chelonia mydas} on her way back to the sea at dawn after laying eggs on Quinta Playa beach, Isabela Is, Galapagos

Patrick Morris / Female Green Turtle {Chelonia mydas} on her way back to the sea after laying eggs on Quinta Playa beach, Isabela Is, Galapagos

Martha Holmes / Detail of palm leaf, back lit.

Rolf Nussbaumer / Chipping Sparrow, Spizella passerina, adult on Mountain Cedar (Juniperus ashei), Uvalde County, Hill Country, Texas, USA, April 2006

Michael Hutchinson / White rhinoceros (Ceratotherium simum) Back of skull of a poached rhinoceros showing bullet hole. Green ring around bullet hole is oxidation of bullet metal. This rhino was poached in 2002 or 2003 on...

Rolf Nussbaumer / Pied-billed Grebe (Podilymbus podiceps) carrying chicks on back, Willacy County, Rio Grande Valley, Texas, USA. May 2004

Christian Ziegler / Green Iguana (Iguana iguana) detail of spines on the back of a dominant male, Barro Colorado Island, Panama

Patricio Robles Gil / Australian Fan Palm (Livistona australis) illuminated by sunlight, Daintree National Park, Queensland, Australia

Piotr Naskrecki / Rapid Assessment Katydid (Brachyamytta rapidoaestima), a newly discovered species, Mt Pic Du Fon, Guinea

Piotr Naskrecki / False Leaf Katydid (Stenampyx annulicornis) becomes transparent when lit from below, Guinea, West Africa

Piotr Naskrecki / Nymph of an unidentified Planthopper, becomes transparent when lit from below, Guinea, West Africa

Piotr Naskrecki / Reticulated Glass Frog (Hyalinobatrachium valerioi) lit from below becomes transparent, Costa Rica

ZSSD / Scarlet Macaw (Ara macao) adult perching, native to South America

Neil Bromhall / Green poison arrow frog male depositing tadpole in pool {Dendrobates auratus} he has carried tadpole on his back to pool site, Panama

Fabio Liverani / Green toad tadpole {Bufo viridis} early stages of development with back legs clearly visible, Italy

Fabio Liverani / Green toad tadpole {Bufo viridis} with front and back legs, Italy

Neil Bromhall / Green poison arrow frog {Dendrobates auratus} female stroking male's back, courtship, Panama

Neil Bromhall / Green poison arrow frog male carrying tadpole on back to a pool where it will develop to frog

Mark Raycroft / Standard Smooth Dachshund (Canis familiaris) adult portrait on green lawn

WILLIAM OSBORN / Saddle back bush cricket {Ephippiger ephippiger} first instar. Romania

Gerry Ellis / Praying Mantis (Mantis sp), Los Cedros River Valley, Ecuador

Claus Meyer / Grasshopper (Tropidacris cristata) pair balancing on twig, Atlantic Forest ecosystem, Brazil

Shin Yoshino / Back-lit leaves in forest, Japan

Konrad Wothe / Lemur Frog (Phyllomedusa lemur) top view of frog on leaf with back leg stretched out, Monteverde Cloud Forest Reserve, Costa Rica

Mitsuhiko Imamori / Vegetation, backlit, Central America

Mitsuhiko Imamori / Green Crab Spider (Oxytate striatipes) shadow from under side of leaf, Shiga, Japan

Fred Bavendam / Green Sea Turtle (Chelonia mydas) crawling back to the sea after laying her eggs, Western Australia

Martha Holmes / Detail of palm leaf - back lit.

Fabio Liverani / Green toad tadpole with front & back legs and long tail {Bufo viridis} Italy

Paul D Stewart / 1720 illustration of 'small cape lizard' from southern Africa. Apparently a very devout lizard, it carried three crosses on its back. Henri Chatelain appears to have published the original in French i...

Tom Vezo / Violet-green Swallow (Tachycineta thalassina), White Mountains, Arizona

Konrad Wothe / European Beech (Fagus sylvatica) leaves in spring, Upper Bavaria, Germany

Premaphotos / Green tree / Weaver ant (Oecophylla smaragdina) workers co-operating to take a large ant back to their nest as prey, in rainforest, Thailand

Premaphotos / Bush-cricket / katydid (Sasima spinosa) resembling a leaf and showing its brightly coloured back legs in defensive display when disturbed in rainforest, New Guinea

Mitsuaki Iwago / Backlit palm leave, South Australia