Juergen Freund / Split-level shot of Fan coral (Gorgonacea) in the shallows with boat shilouetted against the sunset in the background. North Raja Ampat, West Papua, Indonesia, February 2010

Georgette Douwma / Giant Frogfish (Antennarius commerson) on coral reef. The animal can vary greatly in colour and pattern. Bali, Indonesia, December.

Sergey Gorshkov / Salmon (Salmonidae) fry with egg case still attached, Lake Kuril, Kamchatka, Far East Russia, January

Tim Laman / Marine Iguanas (Amblyrhynchus cristatus) on the south coast of Espanola Island, Galapagos, Vulnerable species

Georgette Douwma / White banded/ Scarlet cleaner shrimp (Lysmata amboinensis) on Coral hind (Cephalopholis miniata) Rinca, Komodo National Park, Indonesia, October

Georgette Douwma / Lyrtetail anthias (Pseudanthias squamipinnis) in water column with Peach anthias (Pseudanthias dispar) in background. Indonesia, October

Georgette Douwma / Pink anemonefish (Amphiprion perideraion) with anemone showing the effects of bleaching. The bleached anemone is almost white, whereas the unbleached anemone is brown due to the presence of symbiotic...

Shattil & Rozinski / Pacific white-sided dolphin (Lagenorhynchus obliquidens) surfacing off the coast of British Columbia, Canada, September

Tim Laman / Galapagos penguin (Spheniscus mendiculus) swimming off the coast of Bartolomew Island, Galapagos, Endangered species

Tim Laman / Galapagos penguin (Spheniscus mendiculus) swimming off the coast of Bartolomew Island, Galapagos, Endangered species

Jeff Rotman / Lemon shark (Negaprion brevirostris) close up of eye, Bimini, Bahamas

Georgette Douwma / Bleached coral {Acropora sp} caused by loss of algae with living purple polyps. Maldives.

Sue Flood / Bluefin tuna {Thunnus thynnus} captive in fish farm, Japan, 2000

Jeff Rotman / Close-up of gills of Lemon shark (Negaprion brevirostris)

Juan Carlos Munoz / Aerial view of Southern right whale (Eubalaena australis / Balaena glacialis australis) mother and calf. Valdes Peninsula, Patagonia, Argentina, Oct 2008

Juan Carlos Munoz / Aerial view of Southern right whale (Eubalaena australis / Balaena glacialis australis) mother and calf. Valdes Peninsula, Patagonia, Argentina, Oct 2008

Juan Carlos Munoz / Great white shark (Carcharodon carcharias) leaping out of the water. False Bay, South Africa, July 2010

Juan Carlos Munoz / Group of South American fur seals (Arctocephalus australis) swimming near the rocky shore. Puerto Deseado, Patagonia, Argentina, March 2008

Juan Carlos Munoz / Great white shark (Carcharodon carcharias) leaping out of the for cloth bait. False Bay, South Africa, July 2010

Juan Carlos Munoz / South African fur seal (Arctocephalus pusillus pusillus) swimming near surface, Seal Island. False Bay, South Africa, July 2010

Juan Carlos Munoz / Great white shark (Carcharodon carcharias) leaping out of the water after prey. False Bay, South Africa, July 2010

Juan Carlos Munoz / Great white shark (Carcharodon carcharias) leaping out of the water. False Bay, South Africa, July 2010

Doc White / Narwhal (Monodon monoceros) swimming near the surface, seen from the air. Pond Inlet, Canadian Arctic

Alex Mustard / A young California sealion (Zalophus californianus) swims in a shallow pool. Los Isotes, La Paz, Mexico. Sea of Cortez, East Pacific Ocean.

Alex Mustard / A split level view of a bull California sealion (Zalophus californianus) swimming beneath Los Islotes sealion colony. La Paz, Mexico. Sea of Cortez, East Pacific Ocean.

Alex Mustard / A young California sealion (Zalophus californianus) playing with a starfish, inside an underwater cave. The pups will pick up a variety of objects (such as starfish, lumps of coral, shells and feather...

Alex Mustard / A bull California sealion (Zalophus californianus) bursting through a school of baitfish in the shallows. Los Isotes, La Paz, Mexico. Sea of Cortez, East Pacific Ocean.

Alex Mustard / A silhouette of a California sealion pup (Zalophus californianus) next to cliffs. Los Isotes, La Paz, Mexico. Sea of Cortez, East Pacific Ocean.

Pete Oxford / Galapagos garden eels (Heteroconger / Taenioconger klausewitzi) on seabed, Galapagos Islands

Jeff Rotman / Boy (nine years) catching 15lb Northern lobster (Homarus americanus) whilst diving in the Atlantic Ocean, Gloucester, Massachusetts, USA Model released Model released.

Doug Perrine / Bryde's whale (Balaenoptera brydei / edeni) swimming past a baitball of Sardines (Clupeidae) off Baja California, Mexico, Eastern Pacific Ocean, November

Doug Perrine / Bryde's whale (Balaenoptera brydei / edeni) expeling air and water from mouth through baleen plates after engulfing part of a baitball of Sardines (Clupeidae) with California sea lion (Tetreapturus au...

Doug Perrine / Bryde's whale (Balaenoptera brydei / edeni) swimming past a baitball of Sardines (Clupeidae)California sea lion (Tetreapturus audax) and Striped marlin (Zalophus californianus) in background. Off Baja...

Roberto Rinaldi / Wreck of crude oil super-tanker "Amoco Milford Haven", populated by shoals Swallowtail anthias (Anthias anthias) and Bogues (Boops boops). The tanker sank on April 14th, 1991 after three days of fire....

Roberto Rinaldi / Stern of crude oil super-tanker "Milford Haven", which sank on April 14th, 1991 after three days of fire. Genoa, Italy, 2007.

David Shale / Hydromedusa / Trachymedusa (Crossota sp) from approx 2700m, mid Atlantic ridge, June 2010

Floris van Breugel / Giant Red Sea Urchins (Strongylocentrotus franciscanus) Purple sea urchins (Strongylocentrotus purpuratus) and Sea Anenomes (Anthopleura) underwater, in tide pools along Californian coastline, USA.

Alex Mustard / View of gills and gill rakers of a Basking shark (Ceterhinus maximus) as it feeds in Cornwall, England. UK, East Atlantic Ocean. June

Alex Mustard / A captive Zebra shark (Stegostoma fasciatum / varium) portrait, with diver behind, in Brighton Sealife Centre, Brighton, England, UK. Model released, not property released

Alex Mustard / An Ornate / Banded Wobbegong Shark (Orectolobus ornatus) lies amongst boulders inside a cave, during the day. Fish Rock, Southwest Rocks, New South Wales, Australia. Pacific Ocean. November

Alex Mustard / Southern Stingrays (Hypanus americanus) swimming in a school over sand ripples, Grand Cayman, Cayman Islands. British West Indies. March

Alex Mustard / Female Grey seal (Halichoerus grypus) startled. Lundy Island, Devon, England, UK.

Alex Mustard / Female Grey seal (Halichoerus grypus) approaching a snorkeller's fins, Lundy Island, Devon, England, UK, North East Altantic Ocean. July 2010. Model released

Alex Mustard / Atlantic grey seal (Halichoerus grypus) swimming beneath the surface, Lundy Island, Devon, England, UK. July 2010

Alex Mustard / Atlantic grey seal (Halichoerus grypus) resting vertical beneath the surface, Lundy Island, Devon, UK. July

Alex Mustard / Two Florida manatee (Trichechus manatus latirostrus) surfacing to breathe, in morning light. Three Sisters Spring, Crystal River, Florida. USA. January

Alex Mustard / Southern stingray (Hypanus americanus) swimming over ripples on sandbar, Grand Cayman, Cayman Islands.

Alex Mustard / Southern stingray (Hypanus americanus) swimming over sand ripples on sand bar, Grand Cayman, Cayman Islands. British West Indies. Caribbean Sea.

Alex Mustard / Southern stingray (Hypanus americanus) swimming over seabed, Grand Cayman, Cayman Islands. British West Indies, Caribbean Sea.

Alex Mustard / Lemon shark (Negaprion brevirostris) in shallow water at the surface, split level. Little Bahama Bank, Bahamas. West Atlantic Ocean.

Alex Mustard / Lemon shark (Negaprion brevirostris) under sun rays. Little Bahama Bank, Bahamas. West Atlantic Ocean.

Alex Mustard / Bottlenose dolphin (Tursiops truncatus) in shallow water over a sand bank. Sandy Ridge, Little Bahama Bank, Bahamas. Tropical West Atlantic

Tim Laman / Lionfish (Pterois) hovering in a Sea Fan in a view looking toward the surface of the water. Misool Island vicinity. Near smaller island of Fiabacet. West Papua, Indonesia, April 2007

Tim Laman / Large school of Trevally (Caranx) shelter beneath the jetty at Arborek Village. Many village docks in this area act as shelter for these fish, which provide a handy source of protein for villagers in...

Tim Laman / Denise's Pygmy seahorse (Hippocampus denise) camouflaging itself in a Sea Fan. Yellow colour form. Pisang Islands, West of Fak Fak Peninsula. West Papua, Indonesia, April 2007

Tim Laman / Pfeffer's Flamboyant Cuttlefish (Metasepia pfefferi) West Papua, Indonesia, April 2007

Alex Mustard / Two Atlantic spotted dolphins (Stenella frontalis) over a shallow sand bank. On the left is a juvenile which does not have the characteristic spots of the adults. The adult is carrying a piece of weed...

Alex Mustard / Southern stingray (Hypanus americanus) swimming over sand ripples on sandbar, Grand Cayman, Cayman Islands.

Alex Mustard / Bottlenose dolphin (Tursiops truncatus) with surface reflection, in shallow water over a sand bank. Sandy Ridge, Little Bahama Bank, Bahamas. Tropical West Atlantic

Alex Mustard / Oceanic whitetip shark (Carcharhinus longimanus) with Pilot fish (Naucrates ductor). Tropical West Atlantic Ocean, off Cat Island, Bahamas.

Alex Mustard / Male Great white shark (Carcharodon carcharias) with sunrays, Guadalupe Island, Mexico, Pacific Ocean.

Alex Mustard / A young Harbour / Common seal (Phoca vitulina) Lundy Island, Devon, England, UK. Bristol Channel, North East Atlantic Ocean. July

Alex Mustard / A pair of Australian Sea Lions (Neophoca cinerea) socialising in the shallows. Kangaroo Island, South Australia, Australia. Southern Ocean. November

Alex Mustard / Lemon shark (Negaprion brevirostris) accompanied by Remoras (Echeneis naucrates) at night. Little Bahama Bank, Bahamas. Tropical West Atlantic Ocean.

Alex Mustard / Caribbean Reef Shark (Carcharhinus perezi) portrait in blue water above a coral reef. Grand Bahama, Bahamas. March

Claudio Contreras / Guadalupe fur seal (Arctocephalus townsendi) pup playing underwater, Guadalupe Island Biosphere Reserve, off the coast of Baja California, Mexico, March

Solvin Zankl / These hatchlings of an Olive ridley sea turtle (Lepidochelys olivacea) should be buried and protected under 40 cm of warm sand, but a domestic dog dug them out at Ostional beach in Costa Rica. Novembe...

Sue Flood / Killer whale / Orca {Orcinus orca} attacks Grey whale calf {Eschrichtius robustus} California, USA

Jeff Rotman / Bat rays (Myliobatis californica) schooling, Redondo Rock, Galapagos Is

Jeff Rotman / Mouth of Banded Wobbegong shark (Orectolobus ornatus) Perth, Australia - Indian Ocean.

Jeff Rotman / Nostril and mouth parts of Bamboo shark (Chiloscyllium punctatum) Perth, Australia, Indian Ocean

Jeff Rotman / Detail of dorsal fin of Bluespine Unicornfish (Naso Unicornis) Red Sea, Egypt

Juergen Freund / Chambered nautilus (Nautilus pompilius) with radio transmitter, Indo-pacific

Juergen Freund / Richard Fitzpatrick releases Grey reef shark {Carcharhinus amblyrhynchos} after inserting transmitter into its belly, as part of the Coral Reef census, Lizard Island, Queensland, Australia, April 2008

Juergen Freund / Invertebrate specimens for the Barcode of Life project of French scientist Laetitia Plaisance as part of the Coral Reef census, Lizard Island, Queensland, Australia, April 2008

Georgette Douwma / Blue-girdled angelfish (Pomacanthus navarchus) on the wreck "Kasi Maru", a Japanese merchant ship sunk in fifty feet of water off Munda in Ironbottom Sound during a World War II bombing raid July 1943...

Jeff Rotman / Japanese Giant Spider Crab (Macrocheira kaempferi) World's Largest Crustacean in Tokyo Aquarium, Japan.

Doug Perrine / Salmon shark {Lamna ditropis} captive, with salmon in mouth (eyes are rolled back for protection), Prince William Sound, Alaska, USA, (digitally modified)

David Shale / Deepsea squid from midwater catch 195-498m, Mid-Atlantic Ridge, North Atlantic Ocean

David Shale / Head-on view of Spothead lanternfish {Diaphus metopocampus} from between 500 and 800m, Mid-Atlantic Ridge, North Atlantic Ocean

David Shale / Deepsea squid (Histioteuthis sp) showing funnel, from between 188m/617ft and 507m/1,663ft depth, night, Mid-Atlantic Ridge, North Atlantic Ocean

David Shale / Deepsea octopus (Benthoctopus johnsoniana) Mid-Atlantic Ridge, North Atlantic Ocean

David Shale / Deepsea Medusa jellyfish (Colobonema sp), Mid-Atlantic Ridge, North Atlantic Ocean

David Shale / Shelled Pteropod / Sea butterfly {Diacria trispinosa} with egg string attached, from between 188 and 507m, Mid-Atlantic Ridge, North Atlantic Ocean

David Shale / Fangtooth (Anoplogaster cornuta) portrait, Mid-Atlantic Ridge, North Atlantic Ocean

David Shale / Greater silver hatchet fish (Argyropelecus gigas) Mid-Atlantic Ridge, North Atlantic Ocean

David Shale / Deepsea squid (Histioteuthis sp) from between 188m/617ft and 507m/1,663ft depth, night, Mid-Atlantic Ridge, North Atlantic Ocean

David Shale / Comb Jelly {Bollinopsis ssp} caught with 1m ring net between 0 and 150m, comb plates, Mid-Atlantic Ridge, North Atlantic Ocean

David Shale / View inside the mantle of the deepsea Octopod {Grimpoteuthis discoveryi} Mid-Atlantic Ridge, North Atlantic Ocean

David Shale / Viper fish {Chauliodus sloani}, Mid-Atlantic Ridge, North Atlantic Ocean

David Shale / Eryonicus larva of Shrimp {Polycheles sp) from between 2710-2798m, Mid-Atlantic Ridge, North Atlantic Ocean

David Shale / Angler fish Melanocetus murrayi, Mid-Atlantic Ridge, North Atlantic Ocean

David Shale / Angler fish (Melanocetus murrayi) Mid-Atlantic Ridge, North Atlantic Ocean

David Shale / Angler fish (Melanocetus murrayi) Mid-Atlantic Ridge, North Atlantic Ocean

Warwick Sloss / Eggs attached to the underbelly of the male Weedy sea dragon (Phyllopteryx taeniolatus) wild-caught but filmed in captive conditions under licence, from the coast around south Australia

Claudio Contreras / Cushion sea star (Oreaster reticulatus) on Turtle grass (Thalassia testudinum) Banco Chinchorro Biosphere Reserve, Caribbean Sea, Mexico, July