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

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...

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...

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.

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

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

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

Solvin Zankl / Deep sea squid (Histioteuthis corona) specimen, from deep sea Atlantic Ocean.

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

Solvin Zankl / Portuguese Man-of-War (Physalia physalis) close up of tentacles, Sargasso Sea, Bermuda

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

Mark MacEwen / Firefly squid (Watasenia scintillans) close to beach during mating season. Toyama Bay, Japan.

Alex Hyde / Crane fly / Daddy long legs (Tipula paludosa) female covered in morning dew. Peak DIstrict National Park, Derbyshire, UK. September. Winner of the Hidden Britain Category of the BWPA Awards 2015.

Georgette Douwma / Cock's comb oyster (Lopha cristagalli) covered with encrusting sponge on artificial reef. Mabul, Malaysia.

Georgette Douwma / Erect rope sponge (Amphimedon compressa) Bonaire, Netherlands Antilles, Caribbean, Atlantic Ocean.

Georgette Douwma / Erect rope sponge (Amphimedon compressa) Bonaire, Netherlands Antilles, Caribbean, Atlantic Ocean.

Georgette Douwma / Stove-pipe sponge (Aplysina archeri) and Orange elephant ear sponge (Agelas clathrodes) Bonaire, Netherlands Antilles, Caribbean, Atlantic Ocean.

Juergen Freund / Detail of Giant kelp (Macrocystis pyrifera) gas-filled bladders (pneumatocysts) Vancouver Island, British Columbia, Vancouver Island, Canada.

Juergen Freund / Chambered nautilus (Nautilus pompilius) with red whip coral. Osprey Reef, Great Barrier Reef, Queensland, Australia.

Jack Dykinga / Saguaro cactus (Carnegiea gigantea) in flower at night, with The Milky Way behind, Sonoran Desert National Monument, Sierra Estrella Mountain Wilderness, Arizona, USA, May.

Ole Jorgen Liodden / Boy on skis going up slope, framed by snow laden tree, Norway, February 2014.

Ole Jorgen Liodden / Brown pelican (Pelecanus occidentalis urinator) close up of throat pouch skin, with beak open, Galapagos.

Ole Jorgen Liodden / Marine iguana (Amblyrhynchus cristatus) silhouetted at sunrise, Galapagos Islands. Endemic.

Erlend Haarberg / Ice patterns on lake, Sorvagen, Moskenes, Lofoten, Nordland, Norway, January.

Paul Williams / View from plane of landscape between Alice Springs and Perth, Australia, November.

Mark Jones / Snares-crested penguin (Eudyptes robustus) group climbing steep route to colony. Snares Island, New Zealand Subantarctic Islands. Endemic. Vulnerable species.

Constantinos Petrinos / Chromodorid nudibranch (Chromodoris annae) on Sea Squirt (Polycarpa aurata) Lembeh Strait, North Sulawesi, Indonesia.

Constantinos Petrinos / Peacock-tail anemone shrimp (Periclimenes brevicarpalis) living commensally with the Branching Sea Anemone (Actinodendron glomeratum). Lembeh Strait, North Sulawesi, Indonesia.

Richard Robinson / Featherstar (Crinoidea) on red coral (Errina novazelandiae) in Doubtful Sound, Fiordland National Park, New Zealand.

MYN / Gil Wizen / Shield bug (Ventocoris falcatus) Central Coastal Plain, Israel Meetyourneighbours.net project

Pal Hermansen / Aerial view of river and swans, South West Iceland, June 2014.

Alex Hyde / Cup fungi (Cookeina sp) growing on decaying log in lowland dipterocarp forest. Danum Valley, Sabah, Borneo.

Nick Garbutt / Scarlet Ibis (Eudocimus ruber) flying into roost sight at dusk, Hato La Aurora Reserve, Los Llanos, Colombia, South America.

Stephen Dalton / Close up of the inside of a foxglove (Digitalis purpurea) showing the pistil and stamen, UK.

Stephen Dalton / Close up of a Cynara sp flower, UK.

Chris Mattison / Dandelion (Taraxacum officinale) seedhead, focus stacked image.

Jack Dykinga / Cottonwood (Populus fremontii) in autumn, Long Canyon, Grand Staircase-Escalante National Monument, Utah, USA. October 2013.

Olga Kamenskaya / Snails (Baicalia turriformis) Lake Baikal, Russia, August.

Sam Hobson / Rose-ringed / ring-necked parakeets (Psittacula krameri) in flight on way to roost in an urban cemetery, London, UK, January. Finalist in the Birds category, Wildlife Photographer of the Year Awards (...

Alex Mustard / Male Bullethead parrotfish (Chlorurus sordidus) displaying in late afternoon. Ras Katy, Sinai, Egypt. Gulf of Aqaba, Red Sea.

Michael D. Kern / Kaleidoscope pattern formed from picture of Johnstons Chameleon (Chamaeleo johnstoni) face and legs. Restricted for Editorial use until December 2015

Juergen Freund / Bioluminescent fungi (Omphalotus nidiformis / Pleurotus nidiformis) glowing on tree trunk in rainforest at night, Atherton Tablelands, Queensland, Australia,

Alex Mustard,Alex Mustard / A blue light fluorescence photo of Jewel anemones (Corynactis viridis). The blue light source excites the fluorescent pigments in the anemones, which emit light of other colours. The muddy seabed and...

Alex Mustard / The eye of a Pacific giant octopus (Enteroctopus dofleini). Browning Pass, Vancouver Island, British Columbia, Canada

Alex Mustard / Peacock flounder (Bothus lunatus) resting on the seabed, East End, Grand Cayman, Cayman Islands, British West Indies, Caribbean Sea.

Alex Hyde / Indian moon / Indian luna moth (Actias selene) head-on view showing feather-like antennae. Captive.