Jose B. Ruiz / Aleppo pine tree {Pinus halepensis} photographed with long exposure at night with star trails behind, Torremanzana, Alicante, Spain

Jose B. Ruiz / Aleppo pine tree {Pinus halepensis} photographed with long exposure at night with star trails behind, Torremanzana, Alicante, Spain

Juergen Freund / Horned sea stars {Protoreaster nodosus} in shallow water, Indo-Pacific

Juergen Freund / Split-level photograph of coral reef shallows, Rowley Shoals, Western Australia

Jack Dykinga / Night sky with trails of stars rotating around the North Star with a Saguaro Cactus (Carnegiea gigantea) silhouetted in the foreground, Cabeza Prieta NW Refuge, Arizona, USA

Kirkendall-Spring / Incoming tide surging around Starfish (Asteroidea) clinging to a rock, Toleak Point, Olympic NP, Washington, USA

Eric Baccega / Igloo lit up at night under northern lights (Aurora borealis) Northwest Territories, Canada March 2007

Eric Baccega / Igloo under northern lights, Northwest Territories, Canada March 2007

Jeff Rotman / Northern Sea Star (Asterias vulgaris) regenerating lost arms. New England, USA, Atlantic Ocean.

Jose B. Ruiz / Olive tree {Olea europaea} at night with star trails in sky, Spain

Jose B. Ruiz / Dead Holm oak trees {Quercus ilex} in lake, at night with star trails in sky, Caceres, Extremadura, Spain

Juergen Freund / Brittle star on sponge. (Ophiothrix suensonii) Caribbean

Jack Dykinga / Saguaro Cacti (Carnegiea gigantea) silhouetted against night sky with star trails, time exposure for 5 hours after midnight, Cabeza Prieta National Wildlife Refuge, Arizona. New Years 2000

Jose B. Ruiz / Tree growing on rock formation with night sky, Torcal de Antequera, Malaga, Spain

Chris Newbert / Blue Sea Star (Linckia laevigata) and schooling baitfish, 20 feet deep, Papua New Guinea

Jack Dykinga / Sea stars on rocks amongst surf at low tide, Fourth beach, Olympic peninsula, Olympic NP, Washington, USA

Rolf Nussbaumer / Least bittern {Ixobrychus exilus} male perching between reeds, Welder Wildlife Refuge, Sinton, Texas, USA, May 2005

David Shale / (Luidia sarsi) bipinnaria larva, late larval stage of starfish, deep sea Atlantic ocean

Jorma Luhta / Northern lights, Lapland, Finland

Constantinos Petrinos / A new Starfish {Fromia} regenerates from detached arm, Sulawesi Indonesia. NB will have 6 arms instead of normal 5

Patricio Robles Gil / Sea Star on rocky beach, Baja California, Mexico

Birgitte Wilms / Brittlestar (Ophiothrix sp) juvenile on Blue Sea Star (Linckia laevigata) Solomon Islands

Norbert Wu / Scuba diver exploring ice caves below Weddell Seal (Leptonychotes weddellii) breathing holes, life below feeds on seal feces, Antarctica

Flip Nicklin / Sea Star, Anemones and Coralline Algae living 40 feet below the water surface, Admiralty Inlet, Lancaster Sound, Nunavut, Canada

Norbert Wu / Weddell Seal (Leptonychotes weddellii) breathing hole is above this ice cave with diver, the cave is filled with Sea Stars (Odontaster validus) that feeds on seal feces, Antarctica

Fred Bavendam / Variety of small reef fish swimming in the currents above a Hard Coral reef with Sponges, Ascidians, and a blue Sea Star, Manado, North Sulawesi, Indonesia

Norbert Wu / Candy Cane Sea Star (Fromia monilis) on Magnificent Sea Anemone (Heteractis magnifica) foot, Sipidan Island, Borneo

Fred Bavendam / Basslet (Pseudanthias sp) school, swimming near a Sea Fan (Melithaea sp) and a Blue Sea Star (Linckia laevigata)

Fred Bavendam / Sunflower Sea Star (Pycnopodia helianthoides) crawling amidst Kelp, Sponge, Sea Anemones, Sea Urchins, and a Sculpin, Quadra Island, British Columbia, Canada

Fred Bavendam / Common Comet Star (Linckia guildingii) in an unusual lavender color variation, it is typically beige or yellowish in color, Manado, North Sulawesi, Indonesia

Fred Bavendam / Firebrick Sea Star (Asterodiscides truncatus) portrait, underwater, Jarvis Bay, New South Wales, Australia

Juergen Freund / Seastars in tide pool split level {Asteroidea} Canadian pacific coast

Martin Dohrn / Maasai herdsman with his cattle. Serengeti NP, Ngorongoro Conservation Area, Tanzania, East Africa. Image taken using 'Starlight Camera' technology without artificial lighting.

Solvin Zankl / Close up of thorns of Crown of thorns starfish {Acanthaster planci} Sulawesi, Indonesia

Georgette Douwma / Comet arm of starfish {Linckia multifora} asexual reproduction. Maldives

Georgette Douwma / Crown of thorns starfish {Acanthaster planci} Andaman Sea, Thailand

Georgette Douwma / Crown of thorns starfish and butterflyfish on coral reef, Red Sea, Egypt.

Doug Wechsler / Sea anemone feeds on starfish, Puget Sound, Washington, USA

George McCarthy / Bittern (Botaurus stellaris) standing in grass. Lesvos, Greece, Europe

Jabruson / Mount Stanley, Ruwenzori mountains ('Mountains of the Moon'), Virunga, Rep of Congo (formerly Zaire), Central Africa

Martin Dohrn / Wildebeest {Connochaetes taurinus} under stars at night, Masai Mara, Kenya. Starlight image intensifier camera image taken with no artificial light

Martin Dohrn / The Southern Cross star constellation shining above Ballenites trees in Masai Mara, Kenya. Starlight image intensifier camera image taken with no artificial light.

Martin Dohrn / Spotted hyaenas at night, Masai Mara, Kenya. Starlight image intensifier camera image taken with no artificial light, composite

Martin Dohrn / Bioluminescence - pool with Snook, Snapper and a Stingray fish, Bio Bay, Vieques Island, Puerto Rico. Central America. Starlight image intensifier camera image taken with no artificial light.

Martin Dohrn / African elephant herd {Loxodonta africana} at night, Masai Mara. Starlight image intensifier camera image taken with no artificial light.

Jose B. Ruiz / White storks {Ciconia ciconia} at nest at night. Los Berruecos NP, Extremadura. Spain. Nesting on granite boulders to keep themselves safe from mammal predators. Winner of Innovation Award in Wildlife...

Martin Dohrn / Moonlit night-time landscape of kopje Serengeti NP, Ngorongoro Conservation Area, Tanzania, East Africa. Image taken using 'Starlight Camera' technology without artificial lighting.

Martin Dohrn / Night-time in the Serengeti NP, Ngorongoro Conservation Area, Tanzania, East Africa. Image taken using 'Starlight Camera' technology with no artificial lighting.

Jorma Luhta / Aurora borealis colours in night sky, northern Finland, March

Jorma Luhta / Cross country skier and aurora borealis colours in night sky, northern Finland, winter

Jorma Luhta / Moving belt of aurora borealis colours in night sky. Lapland, northern Finland, winter

Jorma Luhta / Aurora borealis colours in midnight sky, northern Finland, April

Jorma Luhta / Aurora borealis corona colours in night sky, Lapland, northern Finland, winter

Jorma Luhta / Aurora borealis colours in night sky showing corona, northern Finland, winter

Jorma Luhta / Aurora borealis bow prior to storm. Northern Finland, winter 2002

Jorma Luhta / Aurora borealis bow indicating approaching borealis storm. Northern Finland, winter 2002

Jorma Luhta / Aurora borealis storm colours in night sky, northern Finland, winter

Jorma Luhta / Aurora borealis storm colours in night sky, northern Finland, February 2002, winter

Jorma Luhta / Aurora borealis colours in night sky, northern Finland, winter

Jorma Luhta / Aurora borealis colours in night sky over lake, northern Finland

Jorma Luhta / Aurora borealis colours in night sky over lake, northern Finland (nr Arctic circle), October 2002. Auroras also occur in the southern hemisphere where they are know as Aurora australis.

Jorma Luhta / Aurora borealis colours in night sky over lake, northern Finland, October 2002

Jorma Luhta / Aurora borealis colours in night sky, northern Finland, winter

Jorma Luhta / Aurora borealis lights in night sky and full moon. Northern Finland, January, winter 2002

Jorma Luhta / Person watching Aurora borealis colours in night sky, northern Finland, winter

Jorma Luhta / Aurora borealis colours, moon and Jupiter in night sky, northern Finland, winter 2002

Jorma Luhta / Aurora borealis bow in moonlit night sky, northern Finland, January, winter 2002

Jorma Luhta / Green aurora borealis colours in night sky, Lapland, northern Finland, winter. Greeen is the most commonly seen colour in Auroras.

Jorma Luhta / Aurora borealis storm showing blue corona in night sky, northern Finland.

Jorma Luhta / Aurora borealis colours in night sky, northern Finland, September 2001. Red corona at beginning of storm

Doug Allan / Coral landscape in sheltered crevice, Antarctica. Sponges, soft corals and starfish

Michele Westmorland / Spanish / Slipper lobster (Scyllarides latus) eye detail, with starfish, Palau, Micronesia.

Gavin Hellier / French flag under Arc de Triomphe built by Napoleon, Etoile, Paris, France 2011

Gavin Hellier / French flag under Arc de Triomphe built by Napoleon, Etoile, Paris, France 2011

Gavin Hellier / Escalators in motion in Quartier 206 luxury shopping centre on Friedrichstrasse, Berlin, Germany 2009

Juan Carlos Munoz / Aurora borealis and star trails over Jokulsarlon glacier lagoon. Southern Iceland, Europe, August 2012.

Kirkendall-Spring / Night time view of a campsite tent on the Death Canyon Shelf along the Teton Crest Trail in Grand Teton National Park. Wyoming, USA, July 2011

Kirkendall-Spring / Night time view of a campsite tent on the Death Canyon Shelf along the Teton Crest Trail in Grand Teton National Park. Wyoming, USA, July 2011

Sue Daly / Spiny Starfish (Marthasterias glacialis) growing a new limb. Vingt Clos, Sark, British Channel Islands, August., August.

Sue Daly / Bloody Henry Starfish (Henricia oculata). L'Etac, Sark, British Channel Islands, August.

Sue Daly / Bloody Henry Starfish (Henricia oculata). Les Dents, Sark, British Channel Islands, August.

Sue Daly / Seven-armed Starfish (Luidia ciliaris). Les Dents, Sark, British Channel Islands, August.

Sue Daly / British underwater scenic with Jewel Anemones (Corynactis) and Spiny Starfish (Marthasterias glacialis). Vingt Clos, Sark, British Channel Islands, August.

Wild Wonders of Europe / Widstrand / Little bittern (Ixobrychus minutus) amidst reeds, Danube delta rewilding area, Romania, June

Jeff Rotman / Ochre Sea Stars (Pisaster ochraceus) feeding on barnacles, Vancouver Island, British Columbia, Canada North Pacific Ocean

Jeff Rotman / Sunflower Sea Star (Pycnopodia helianthoides) scavenging dead Yelloweye Rockfish (Sebastes ruberrimus) Vancouver Island, British Columbia, Canada North Pacific Ocean

Jeff Rotman / Sunflower Sea Star (Pycnopodia helianthoides) scavenging dead Lingcod (Ophiodon elongatus) Vancouver Island, British Columbia, Canada North Pacific Ocean

Jeff Rotman / Sunflower Sea Star (Pycnopodia helianthoides) scavenging dead Yelloweye Rockfish (Sebastes ruberrimus) Vancouver Island, British Columbia, Canada, North Pacific Ocean

Jeff Rotman / Sunflower SeaStar (Pycnopodia helianthoides) scavenging dead Yelloweye Rockfish (Sebastes ruberrimus). Vancouver Island, British Columbia, Canada, North Pacific Ocean

Jeff Rotman / Sunflower Sea Star (Pycnopodia helianthoides) scavenging Lingcod (Ophiodon elongatus) Vancouver Island, British Columbia, Canada, North Pacific Ocean

Jeff Rotman / Sunflower Sea Star (Pycnopodia helianthoides) scavenging Pacific Cod (Gadus macrocephalus). Vancouver Island, British Columbia, Canada. North Pacific Ocean

Jeff Rotman / Sunflower Sea Star (Pycnopodia helianthoides) scavenging dead Pacific Cod (Gadus macrocephalus) Vancouver Island, British Columbia, Canada. North Pacific Ocean

Jeff Rotman / Ochre Sea stars (Pisaster ochraceus) feeding on barnacles, Vancouver Island, British Columbia, Canada. North Pacific Ocean

Jeff Rotman / Blood Star (Henrica leviuscula) arms close up over sea anemones, Queen Charlotte Strait, British Columbia, Canada, North Pacific Ocean.

Jeff Rotman / Sunflower Sea Star (Pycnopodia helianthoides) close up of skin surface, Queen Charlotte Strait, British Columbia, Canada, North Pacific Ocean

Jeff Rotman / Sunflower Sea Star (Pycnopodia helianthoides) close up of skin surface, Queen Charlotte Strait, British Columbia, Canada, North Pacific Ocean