David Shale / Female Anglerfish fanfin seadevil (Caulophryne jordani) - Deep sea species from Atlantic Ocean, found at 700-3000m.

Jane Burton / Axolotl {Siredon / Ambystoma mexicanum} albino, captive.

Doug Perrine / Spotted eagle ray from underneath {Aetobatus narinari} Caribbean Sea (Non-ex).

Duncan Murrell / New Zealand giraffe weevil (Lasiorhynchus barbicornis), Lake Waikaremoana, North Island, New Zealand. New Zealand giraffe weevil is endemic to New Zealand and is its longest beetle in the world.

Alex Mustard / Whale shark (Rhincodon typus) close to the camera with a golden trevally fish (Gnathanodon speciosus) and outline of another whale shark behind , in the plankton-rich green waters of La Paz bay, Baja...

Alex Mustard / Orange painted frogfish (Antennarius pictus) fishing. Here the frogfish is illuminated by a snooted strobe and the background sand lit with a red LED torch. Bitung, North Sulawesi, Indonesia. Lembeh S...

Tony Wu / View down the throat of a male Zoarchias major eelpout (Zoarchias major) that has opened its mouth during a confrontation with another male. Yamaguchi Prefecture, Japan. Pacific Ocean.

Tony Wu / Two male Zoarchias major eelpouts (Zoarchias major) engaged in a mouth-to-mouth confrontation. Yamaguchi Prefecture, Japan, Pacific Ocean.

Tony Wu / Zoarchias major eelpout (Zoarchias major) with her mouth wide open. Yamaguchi Prefecture, Japan, Pacific Ocean.

Lucas Bustamante / Zigzag Heron (Zebrilus undulatus) camouflaged in branches while nesting. Yasuni National Park, Ecuador

Paul Williams / Kinabalu Giant red leech (Mimobdella buettikoferi) feeding on Kinabalu Giant earthworm (Pheretima darnleiensis), Mount Kinabalu, Borneo.

Georgette Douwma / Mantel of Spiny oyster (Spondylus varius). Indonesia. Indo-West Pacific.

Eric Baccega / Shoebill stork (Balaeniceps rex) in the swamps of Mabamba, Lake Victoria, Uganda, February.

Claudio Contreras / Devil's hand Tree (Chiranthodendron pentadactylon) flower, Filo de Caballos, Sierra Madre del Sur, southern Mexico, March

Doug Gimesy / Platypus (Ornithorhynchus anatinus), released onto a log in Little Yarra River, Yarra junction, Victoria, Australia. Photographed under controlled conditions. April 2018.

Juergen Freund / Timelapse of a Scolymia coral (Mussidae) feeding, lit with a UV light, Cairns, North Queensland, Australia.

Valeriy Maleev / Long-eared jerboa (Euchoreutes naso) digging, South Gobi Desert, Mongolia. June. Did you know that the Long-eared jerboa is the mammal with the largest ears in proportion to its body size?

Guy Edwardes / Green elf-cup / wood-cup (Chlorosplenium aeruginascens), New Forest National Park, Hampshire, England, UK. October.

Guy Edwardes / Candle-snuff fungus (Xylaria hypoxylon), New Forest National Park, Hampshire, England, UK. November.

David Fleetham / Guineafowl pufferfish (Arothron meleagris) puffed up in defence, Hawaii.

Alex Mustard / Striped mackerel (Rastrelliger kanagurta) shoal swimming with open mouths, filtering for zooplankton. Marsa Shouna, Port Ghalib, Marsa Alam, Egypt. Red Sea

Theo Bosboom / Common blue damselfly (Enallagma cyathigerum) close up of recently emerged damselfly, including the green liquids that are used to pump up the wings. Hondenven, Tubbergen, the Netherlands. July.

Theo Bosboom / Common blue damselfly (Enallagma cyathigerum) close up of the wings of a just emerged damselfly, including the green liquids that are used to pump up the wings. Hondenven, Tubbergen, the Netherlands....

Yashpal Rathore / Kottigehar dancing frog (Micrixalus kottigeharensis) male calling and displaying to attract female by waving foot, Agumbe, Western Ghats, India.

Yashpal Rathore / Kottigehar dancing frog (Micrixalus kottigeharensis) male calling and displaying to attract female by waving foot, Agumbe, Western Ghats, India.

Robert Thompson / Elephant hawk moth (Deilephila elpenor) portrait, Brackagh Moss National Nature Reserve, Portadown, County Armagh, Northern Ireland. April.

Alex Mustard / Striped mackerel (Rastrelliger kanagurta) mouth wide open as it swims through the water, filtering zoopankton with its gill rakers. Marsa Shouna, Port Ghalib, Marsa Alam, Egypt. Red Sea

Lucas Bustamante / Coastal glassfrog (Cochranella litoralis) on leaf with eggs. San Lorenzo, Esmeraldas, Ecuador.

Fred Olivier / Emperor penguin (Aptenodytes forsteri) walking with chick, Adelie Land, Antarctica, January.

Steve Downer / Slug (Species unknown) descending on slime rope from leaf. UK. June.

David Shale / Pram bug (Phronima) swimming, Mid-Atlantic Ridge. Deep sea species.

Ingo Arndt / Sea trout (Salmo trutta trutta) alevin just hatched with full yolk sac, Europe

Ingo Arndt / Cryptic Lobster moth caterpillar mimics ant {Stauropus fagi} Germany

Ingo Arndt / Moon moth caterpillar with defence spines {Automeris chaconia} Peru

Ingo Arndt / Parson's chameleon male head portrait {Chamaeleo parsonii} Madagascar

Nick Garbutt / Adult Aye-aye (Daubentonia madagascariensis) active in forest canopy at night. Dry deciduous forest near Andranotsimaty. Daraina, northern Madagascar. Critically Endangered

Ann & Steve Toon / RF - Warthog male (Phacochoerus africanus) drinking, Zimanga game reserve, KwaZulu-Natal, South Africa, June. (This image may be licensed either as rights managed or royalty free.)

Christophe Courteau / African elephants (Loxodonta africana) swimming across Chobe River, trunks raised above surface for breathing, Chobe National Park, border between Botswana and Namibia.

Alex Mustard / Warty / Clown frogfish (Antennarius maculatus) male portrait, Anilao, Batangas, Luzon, Philippines, March

Markus Varesvuo / Cormorant (Phalacrocorax carbo) swallowing perch prey, Hungary, January

John Abbott / Glorious scarab (Chrysina gloriosa) flying, Brewster County, Texas, USA. Controlled conditions. August

Nick Hawkins / Leaf mantis (Choeradodis sp.) Tortuguero National Park, Costa Rica.

Ingo Arndt / Masai giraffe (Giraffa camelopardalis tippelskirchi) males fighting, Masai Mara National Reserve, Kenya. Sequence 3 of 3

Alex Hyde / Fishing spider (Trechalea) waiting to catch a Killifish (Cyprinodontiformes) in a rainforest stream at night, Central Caribbean foothills, Costa Rica.

Will Burrard-Lucas / Aardvark (Orycteropus afer) fighting in the dark. Makgadikgadi Pans, Botswana. January

Alex Mustard / Nudibranchs (Doto greenamyeri) newly described species on feather hydroids. Seraya Bay, north coast of Bali, Indonesia. Java Sea.

Alex Mustard / Leafy seadragon (Phycodurus eques). Wool Bay Jetty, Edithburgh, Yorke Peninsula, South Australia.

Doug Perrine / Pygmy shark (Euprotomicrus bispinatus) portrait, captive. Kona, Hawaii. Central Pacific Ocean.

Doug Perrine / Pygmy shark (Euprotomicrus bispinatus) portrait, captive. Kona, Hawaii. Central Pacific Ocean. Digitally manipulated image.

Alex Mustard / Great hammerhead shark (Sphyrna mokarran) female at night with Bar jacks (Caranx ruber), South Bimini, Bahamas. The Bahamas National Shark Sanctuary. Gulf Stream, West Atlantic Ocean.

Jordi Chias / Angular roughshark (Oxynotus centrina) a deepsea species living at 80-300m depth, caught by fishermen and released, Costa Brava, Catalunya, Spain, Mediterranean Sea

Bence Mate / Montezuma oropendola (Psarocolius montezuma) hanging upside down as part of a courtship display. Costa Rica.

Jan Hamrsky / Brine shrimp or monkey shrimp (Artemia salina) female. Controlled conditions.

Alex Hyde / Harvestman (Leiobunum sp.) Triglav National Park, Julian Alps, Slovenia, July.

Alex Hyde / European House Centipede (Scutigera coleoptrata) found on the ceiling of a limestone cave. Photographed on a white background in mobile field studio. Plitvice Lakes National Park, Croatia. November.

Alex Hyde / Water cascading over naturally formed tufa dam. Tufa is a kind of limestone, formed from the precipitation of carbonate minerals which builds up around mosses and water plants to form a solid limeston...

Michael Hutchinson / Titan arum (Amorphophallus titanum), in flower, cultivated specimen in botanic garden, native to Sumatra. Kew Gardens, London, UK. 23 April 2016 This species has the largest unbranched flower inflores...

Michael Hutchinson / Titan arum (Amorphophallus titanum), in flower, cultivated specimen in botanic garden, native to Sumatra. Kew Gardens, London, UK. 23 April 2016 This species has the largest unbranched flower inflores...

Fiona Rogers / Southern plains grey langur / Hanuman langur (Semnopithecus dussumieri) female grooming a domestic dog. Jodhpur, Rajasthan, India. March.

Bert Willaert / Titicaca water frog (Telmatobius culeus) swimming underwater, Lake Titicaca, Bolivia. Critically endangered species.

Bert Willaert / Titicaca water frog (Telmatobius culeus) underwater resting on the lake bed, Lake Titicaca, Bolivia. Critically endangered species.

Wim van den Heever / South African fur seal (Arctocephalus pusillus pusillus) bull breaking apart octopus. False Bay, Cape Town, South Africa.

Franco Banfi / Humboldt squid (Dosidicus gigas) at night off Loreto, Sea of Cortez, Baja California, Mexico, East Pacific Ocean.

Franco Banfi / Beak and tentacles of Humboldt squid (Dosidicus gigas) at night off Loreto, Sea of Cortez, Baja California, Mexico, East Pacific Ocean.

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

Igor Shpilenok / Young female Kamchatka brown bear (Ursus arctos beringianus) playing with oil drum, Kronotsky Nature Reserve, Kamchatka, Far East Russia. May. These bears can develop addiction to sniffing the aviatio...

Igor Shpilenok / Young female Kamchatka brown bear (Ursus arctos beringianus) playing with oil drum, Kronotsky Nature Reserve, Kamchatka, Far East Russia. May. These bears can develop addiction to sniffing the aviatio...

MYN / JP Lawrence / Flag-footed bug (Anisocelis flavolineata) Gamboa, Panama Meetyourneighbours.net project

Sven Zacek / Ural owl (Strix uralensis) chick trying to climb an aspen tree with its beak, talons and wings, Southern Estonia. June.

Sven Zacek / Ural owl (Strix uralensis) chick trying to climb an aspen tree with its beak, talons and wings, Southern Estonia. June.

Alex Mustard / Nudibranch (Flabellina lineata) in aquarium, taken in the field in Gulen, Norway. North East Atlantic Ocean. Collected for scientific research.

Alex Mustard / Portrait of a Severn's pygmy seahorse (Hippocampus severnsi) at Mioskon Island, Raja Ampat, West Papua, Indonesia. Dampier Strait. Tropical West Pacific Ocean.

Alex Mustard / Backlit detail of branching fire coral (Millepora alcicornis) showing the hair like polyps, filled with stinging nematocysts. East End, Grand Cayman, Cayman Islands. Caribbean Sea.

Alex Mustard / Hairy pipehorse (Acentronura dendritica) female swimming over the seabed with her prehensile tail in the air. Bloody Bay Wall, Little Cayman, Cayman Islands. Caribbean Sea.

Alex Mustard / Reef octopus (Octopus cyanea) portrait near wreck. Gubal Island, Egypt. Red Sea.

Alex Mustard / Tasseled wobbegong shark (Eucrossorhinus dasypogon) yawning. Citrus Ridge, Yanggefo Island, Gam Island, Raja Ampat, West Papua, Indonesia.

Cyril Ruoso / Assassin bug (Reduviidae) nymph, Way Kambas National Park, Sumatra, Indonesia.

Cyril Ruoso / Puya flowers (Puya sp) Cordillera Blanca Massif, Andes, Peru.

Alex Hyde / Round-leaved sundew (Drosera rotundifolia) backlit at sunset. Isle of Mull, Scotland. June. Highly commended in the Botanical Britain Category of the British Widllife Photography Awards (BWPA) Competi...

Eric Baccega / Portrait of woman from the Mursi tribe, traditionally decorated and painted, wearing a large clay lip plate, Omo Valley, Ethiopia, March 2015.

Eric Baccega / Dallol hot spring with salt concretions coloured by sulphur, potassium and iron, Dallol Volcano, Danakil Depression, Ethiopia, March 2015.

Eric Baccega / Dallol hot spring with salt concretions coloured by sulphur, potassium and iron, Dallol Volcano, Danakil Depression, Ethiopia, March 2015.

Jordi Chias / Atolla jellyfish (Atolla wyvillei) with Gentoo penguin (Pygoscelis papua) in the background near the surface. Antarctic Peninsula. Finalist in the Underwater category of the Wildlife Photographer of t...

Jiri Lochman / Bolas spider (Dicrostichus furcatus / Ordgarius furcatus) female with bolas, a blob of silk at end of line used to swing at prey, only used by females. Bolas spiders also produce pheromones of specifi...

Sven Zacek / Pink algae in fresh snow on the coast of the Baltic Sea, Lahemaa National Park, Northern Estonia. December 2012.

Solvin Zankl / Deepsea Basket star (Gorgonocephalus lamarckii) specimen, from the North Atlantic near Iceland.

Solvin Zankl / Deepsea Octopus (Bathypolypus bairdii) specimen from the North Atlantic, near the Faroe Islands at a depth of 805m

Solvin Zankl / Deepsea Isopod (Glyptonotus antarcticus) from Antarctic Ocean at a depth of 231m.

Solvin Zankl / Portuguese man-of-war (Physalia physalis) colony, underwater Sargasso Sea, Bermuda

Solvin Zankl / By-the-wind sailor (Velella velella) colony. Sargasso Sea, Bermuda.

Solvin Zankl / Ribbon sawtail fish (Idiacanthus fasciola) from Atlantic Ocean, at a depth of 800-1000m.

Solvin Zankl / Frilled shark (Chlamydoselachus anguineus) specimen with mouth open, from Atlantic Ocean, at a depth of 729m.

Dong Lei / Himalayan honeybee (Apis laboriosa) Mount Namjagbarwa, Yarlung Zangbo Grand Canyon National Park, Nyingchi Prefecture, Tibet, China. October.

Konrad Wothe / Lantern bugs (Fulgora laternaria) on tree trunk, Panguana Reserve, Peru.

Chris Mattison / Budgett's Frog (Lepidobatrachus laevis) mostly submerged in muddy water, with eyes visible above water, captive, occurs in South America.

Gabriel Rojo / Close up of Passionflower (Passiflora caerulea) La Pampa, Argentina.