Alex Mustard / 2020VISION / Light-bulb sea squirts (Clavelina lepadiformis), a colonial filter feeding invertebrate, fluoresce green when photographed under deep blue light. Shetland Islands, Scotland, UK, June. Did you know? Se...

Alex Mustard / 2020VISION / Light-bulb sea squirts (Clavelina lepadiformis), a colonial filter feeding invertebrate, fluoresce orange when photographed under deep blue light. Shetland Islands, Scotland, UK, June. Did you know? L...

Juergen Freund / A barge full of logs. Illegal timber is brought into Sarawak from Kalimantan by both land and sea. Illegal logging in protected areas involves a complex network of people from all walks of life. The i...

Gerrit Vyn / Ruddy Duck (Oxyura jamaicensis) male in breeding plumage performing a "bubbling display"which is used in both courtship and aggressive territorial encounters. The male holds its head and tail and 2 ro...

Stephen Dalton / Domestic cat (Felis catus) watching House mouse (Mus musculus) appear from under furniture, UK, controlled conditions

Solvin Zankl / Common fruit fly (Drosophila melanogaster) White type mutant (eyes lack pigmentation and appear white) laboratory culture. Vienna Drosophila RNAi Center, Institute for Molecular Pathology, Austria

Solvin Zankl / Common fruit fly (Drosophila melanogaster) White type mutant (eyes lack pigmentation and appear white) laboratory culture. Vienna Drosophila RNAi Center, Institute for Molecular Pathology, Austria

Christian Ziegler / Assassin Bug (Reduviidae) waiting by an arboreal termite nest for prey to appear, Barro Colorado Island, Panama

Juergen Freund / A barge full of logs. Illegal timber is brought into Sarawak from Kalimantan by both land and sea. Illegal logging in protected areas involves a complex network of people from all walks of life. The i...

Juergen Freund / Vandalism underwater - names etched onto hard corals at a manta cleaning station by bored dive guides waiting for rays to appear. North Raja Ampat, West Papua, Indonesia.

Juergen Freund / Vandalism underwater - names etched onto hard corals at a manta cleaning station by bored dive guides waiting for rays to appear. North Raja Ampat, West Papua, Indonesia, February

Tim Laman / Borneo tiger leech (Haemadipsa picta) two individuals appear to be mating on a leaf. Gunung Palung National Park, Borneo, West Kalimantan, Indonesia

Tim Laman / Borneo tiger leech (Haemadipsa picta) two individuals appear to be mating on a leaf. Gunung Palung National Park, Borneo, West Kalimantan, Indonesia

Niall Benvie / Male and female Stag beetle (Lucanus cervus) Photograph with text inserted, and manipulated to appear as book illustration, England, UK

Lisa Hoffner / Field assistant Felix Medina waits in a hide / blind for a Cotton-top tamarin to appear. Dry tropical forest, Colomibia, South America. February 2008

Mark Moffett / Dinosaur Ant (Nothomyrmecia macrops) worker guarding scale insects that have exuded so much honeydew that they appear to be covered in sugar, Poochera, Australia

Sergey Gorshkov / Steller's Sea Eagle (Haliaeetus pelagicus) posturing to make itself appear larger, Kamchatka, Russia

Sergey Gorshkov / Steller's Sea Eagle (Haliaeetus pelagicus) posturing to make itself appear larger, Kamchatka, Russia

Sergey Gorshkov / Steller's Sea Eagle (Haliaeetus pelagicus) posturing to make itself appear larger, trying to intimidate other adult, Kamchatka, Russia

Sergey Gorshkov / Steller's Sea Eagle (Haliaeetus pelagicus) posturing to make itself appear larger, Kamchatka, Russia

Sergey Gorshkov / Steller's Sea Eagle (Haliaeetus pelagicus) juvenile making himself appear larger, Kamchatka, Russia

Matthew Maran / Looking out through the entrance of a cave, rocks appear in shape of man's profile, Gunung Mulu National Park, Sarawak, Malaysia

Philippe Clement / Devil's claw (Harpagophytum procumbens) and Devil's thorn (Tribulus zeyheri), prominent creepers of the Kalahari Desert that appear after the rains, Kgalagadi Transfrontier Park, South Africa

Philippe Clement / Devil's claw (Harpagophytum procumbens) and Devil's thorn (Tribulus zeyheri), prominent creepers of the Kalahari Desert that appear after the rains, Kgalagadi Transfrontier Park, South Africa

Piotr Naskrecki / Velvet Worm, modern Velvet Worms appear to be remarkably similar to fossil forms dating back as far as the Cambrian Era, 530 million years ago, Queensland, Australia

Piotr Naskrecki / Velvet Worm, modern Velvet Worms appear to be remarkably similar to fossil forms dating back as far as the Cambrian Era, 530 million years ago, Queensland, Australia

Piotr Naskrecki / Velvet Worm, modern Velvet Worms appear to be remarkably similar to fossil forms dating back as far as the Cambrian Era, 530 million years ago, Queensland, Australia

David Shale / Vibilia sp. (Hyperiidea, Vibiliidae). This is a genus that isn't too easy, even with a specimen under the microscope! This might be V. jeangerardi Lucas, 1845. The genus contains about 17 species, som...

Dave Watts / Pine processionary moth caterpillars moving in line to appear larger than they are, S Europe {Thaumetopoea pityocampa} Mediterranean area

ZSSD / Catalina Macaw (Ara ararauna x macao) a hybrid of the Scarlet Macaw (Ara macao) and Blue and Gold Macaw (Ara ararauna) does not appear in the wild though parents are native to South America

Norbert Wu / Fluorescence sequence, corals appear brown when viewed by light of camera flash, 80 feet deep, Palau, sequence 1 of 2

Chris Newbert / Stargazer (Uranoscopus sp) hiding in sand, flaps of tissue that appear to be teeth keep sand out of mouth, 30 feet deep, Red Sea, Egypt

Andrew Parkinson / Mountain hare in winter coat ears appear over snow drift {Lepus timidus} Scotland, UK

Pete Cairns / Deer stalker searching with binoculars for deer. Knoydart, Scotland, UK

Pete Cairns / Deer stalker with gun waiting for deer to appear over ridge. Knoydart, Scotland, UK

Pete Cairns / Deer stalker with gun waiting for deer to appear over ridge. Knoydart, Scotland, UK

Pete Cairns / Deer stalker searching with binoculars for deer. Knoydart, Scotland, UK

Andrew Parkinson / Mountain hare in winter coat ears appear over snow drift {Lepus timidus} Scotland, UK

Juergen Freund / Sea thimble jellyfish, Caribbean. Inhabit surface waters and usually appear in swarms in spring in Caribbean Sea. Mildly toxic, contact with sensitive skin may produce a mild sting. Size approx 15mm

Juergen Freund / Sea thimble jellyfish close up (Linuche unguiculata) Caribbean Inhabits surface waters; usually appear in swarms in spring in Caribbean Sea. Mildly toxic, contact with sensitive skin may produce a mi...

David Shale / Deep sea decapod {Pasiphaea sp} Atlantic ocean photographed at surface. In the deep where no red light penetrates, these shrimps appear black.

Paul D Stewart / A swan orchid 'Cycnoches' in gilt on the front cover of the first edition (plum, ribbed) of 'On the Various Contrivances by which Orchids are fertilised by Insects and the good effects of intercrossin...

Paul D Stewart / 1862 illustration of Megalosaurus, a wallchart after Waterhouse Hawkins with Pterosaurs in background. One of six wall charts entitled 'Waterhouse Hawkins's Diagrams of the Extinct Animals' for the De...

Paul D Stewart / 1854 Megalosaurus model by Waterhouse Hawkins. Hawkins attempted to scientifically reconstruct dinosaurs for the Crystal Palace Geological Gardens at Sydenham 1852-1855. He was helped by Richard Owen,...

Paul D Stewart / 1854 Iguanodon model by Waterhouse Hawkins. Hawkins attempted to scientifically reconstruct dinosaurs for the Crystal Palace Geological Gardens at Sydenham 1852-1855. He was helped by Richard Owen, th...

Paul D Stewart / Illustration of extinct Thylacine / Tasmanian Tiger (Thylacinus cyanocephalus) engraved by W. Lizars. From Jardine's series 'The Naturalist's Library; Mammalia' 1841 ('The Natural History of Marsupial...

Paul D Stewart / 1854 Megalosaurus model by Benjamin Waterhouse Hawkins with superimposed image (pale brown) of the known lower jawbone used for the reconstruction. Waterhouse Hawkins attempted to scientifically recon...

Gertrud & Helmut Denzau / Two months after the severe cyclone Sidr (November 15 2007) damaged this coastal mangrove forest (Keora) new leaves start to appear, Sundarban East Wildlife Sanctuary, Sundarbans Mangrove forest, Bang...