Neil Challis / Mudskipper (Periophthalmus) displaying with pectoral fin at the entrance to its hole, Southern Thailand, March.
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David Weiller / Aerial tracking shot of locals feeding a juvenile Whale shark (Rhincodon typus) and swimming past a crowd of tourists, Oslob, Philippines, May.
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David Weiller / Aerial tracking shot of locals feeding a juvenile Whale shark (Rhincodon typus) and swimming past a crowd of tourists, Oslob, Philippines, May.
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Joel Sartore / Photo Ark / Chinese blind cave fish (Sinocyclocheilus furcordorsalis) swimming in the darkness, then out of frame, Berlin Aquarium. Captive.
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Doug Perrine / Schooling female Scalloped hammerhead shark (Sphyrna lewini), Big Island, Hawaii, Pacific Ocean.
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Noemie Stroh / Orbicular batfish (Platax orbicularis) schooling into the blue, Shark Reef, Ras Mohamed National park, Red Sea, Egypt, June.
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Noemie Stroh / Napoleon wrasse (Cheilinus undulatus) female swimming through soft coral garden, Daedalus, Red Sea, Egypt, August.
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Magnus Lundgren / Juvenile Ocellaris / Common clownfish (Amphiprion ocellaris) looking out from its home in an anemone, Raja Ampat, West Papua, Indonesia, Pacific Ocean.
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Magnus Lundgren / School of Yellow-ribbon sweetlips (Plectorhinchus polytaenia) swimming with the current, Raja Ampat, Indonesia, Pacific Ocean.
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Lewis Jefferies / Female Scalefin anthias (Pseudanthias squamipinnis) and trigger fish feeding in vibrant coral reef scene, Maldives, Indian Ocean
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Lewis Jefferies / Powder blue tangs (Acanthurus leucosternon) shoaling, Maldives, Indian Ocean.
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Lewis Jefferies / Blackfinned anemonefish (Amphiprion nigripes) family seeks shelter in safety of Anemone's stinging tentacles, South Ari Atoll, Maldives, Indian Ocean.
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Henley Spiers / Striped marlin (Kajikia audax) striking a shoal of baitfish during the largest known seasonal aggregation of Marlin, Magdalena Bay, Baja California Sur, Mexico, Pacific Ocean. November 2019
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Henley Spiers / Striped marlin (Kajikia audax) and California sea lion (Zalophus californianus) competing for food as they hunt down baitfish, Magdalena Bay, Baja California Sur, Mexico, Pacific Ocean.
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Alex Mustard / RF - Portrait of Spinecheek anemonefish (Premnas biaculeatus) in its host Bubble-tip anemone (Entacmaea quadricolor) on a coral reef. Raja Ampat, West Papua, Indonesia. Ceram Sea. (This image may be l...
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Alex Mustard / Portrait of a Red Sea anemonefish (Amphiprion bicinctus) above the tentacles of a Magnificent sea anemone (Heteractis magnifica) on a coral reef. Daedelus Reef. Egypt. Red Sea.
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David Fleetham / Endangered Green sea turtle (Chelonia mydas) stretches neck to be cleaned by Yellow tangs (Zebrasoma flavescens) and Goldring tangs (Ctenochaetus strigosus), North Pacific, Hawaii, USA.
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Pascal Kobeh / A school of Bluespotted cornetfish (Fistularia commersonii), Red Sea, Egypt.
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Doug Perrine / Blue marlin (Makaira nigricans) Vava'u, Kingdom of Tonga, South Pacific
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Solvin Zankl / Bioluminescent anglerfish (Cryptopsaras couesi), deep sea fish from, Atlantic Ocean off Cape Verde. Captive.
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Solvin Zankl / Scaleless black dragonfish (Melanostomias biseriatus) appearing out of the darkness and swimming towards the camera, Atlantic Ocean close to Cape Verde.
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Solvin Zankl / Portrait of Scaleless black dragonfish (Melanostomias biseriatus), Atlantic Ocean close to Cape Verde.
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Solvin Zankl / Giant manta ray (Manta birostris) at cleaning station North Raja Ampat, West Papua, Indonesia, Pacific Ocean.
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Simon Littlejohn / Grey heron (Ardea cinerea) standing on rivers edge in heavy rain, swallowing a small Pike (Esox lucius),River Stour, Dorset, UK, September.
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Franco Banfi / Loggerhead turtle (Caretta caretta) accompanied by pilotfish (Naucrates ductor) swimming near the surface. Vulnerable. Santa Maria Island, Azores, Portugal, Atlantic Ocean
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Andy Murch / Spiny dogfish (Squalus acanthias) portrait. Rhode Island, New England, USA. August.
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Andy Murch / Smooth hammerhead shark (Sphyrna zygaena). Cabo San Lucas, Baja California Sur, Mexico.
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Andy Murch / Scoophead shark (Sphyrna media), released specimen. Isla Chepillo, Rio Bayano, Panama.
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Andy Murch / Red stingray (Hemitrygon akajei) with Banded houndshark (Triakis scyllium) group and smaller fish in background. Chiba Prefecture, Honshu, Japan. September.
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Andy Murch / Rasptail skate (Raja velezi) resting on sea floor. La Paz Bay, Baja California Sur, Mexico.
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Andy Murch / Pyjama shark (Poroderma africanum), two in reef, amongst kelp. Simon's Town, Western Cape, South Africa. May.
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Andy Murch / Happy Eddy (Haploblepharus edwardsii) amongst Cape sea urchin (Parechinus angulosus) and starfish. False Bay, Western Cape, South Africa. June.
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Andy Murch / Nurse shark (Ginglymostoma cirratum) swimming below surface at sunset. South Bimini Island, Bahamas.
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Andy Murch / Little gulper shark (Centrophorus uyato). Cape Eleuthera, Bahamas.
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Andy Murch / Lemon shark (Negaprion brevirostris) surfacing with open mouth. Tiger Beach, Little Bahama Bank, Bahamas.
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Andy Murch / Great hammerhead shark (Sphyrna mokarran) mouth wide open, feeding in shallow water, surrounded by fish. South Bimini Island, Bahamas.
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Andy Murch / Cape fur seal (Arctocephalus pusillus) playing with Dark shyshark (Haploblepharus pictus) carcass, seal diving in background. False Bay, South Africa. May.
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Andy Murch / Bronze whaler shark (Carcharhinus brachyurus) group feeding alongside Cape gannet (Morus capensis) during sardine run. Wild Coast, Eastern Cape, South Africa. June.
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Andy Murch / Banded houndshark (Triakis scyllium) group above sea floor. Chiba Prefecture, Honshu, Japan. October.
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Shane Gross / Dugong (Dugong dugon) male and juvenile Golden trevally (Gnathanodon speciosus) shoal swimming over Turtlegrass (Halophila stipulacea) seagrass bed. Marsa Alam, Egypt.
David Fleetham / Close up at the dental plates of Three color parrotfish (Scarus tricolor) as it comes in for a bite of hard coral, Fiji.
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Terry Whittaker / Brown trout (Salmo trutta) leaping up waterfall to reach spawning grounds upstream. River Endrick, Loch Lomond and The Trossachs National Park, Scotland, UK. July.
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Terry Whittaker / Atlantic salmon (Salmo salar) leaping up waterfall to reach spawning grounds upstream. River Endrick, Loch Lomond and The Trossachs National Park, Scotland, UK. July.
Alex Mustard / Leafy seadragon (Phycodurus eques) male carrying eggs, swims over seagrass meadow. Wool Bay, Edithburgh, South Australia. Gulf of St Vincent.
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Alex Mustard / Leafy seadragon (Phycodurus eques) demonstrates the effectiveness of its camouflage as it shelters amongst seaweeds. This individual is a male carrying eggs. Wool Bay Jetty, Edithburgh, Yorke Peninsul...
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Alex Mustard / School of Oriental sweetlips (Plectorhinchus vittatus) gather tightly together as they rest during the day, with a Clown triggerfish (Balistoides conspicillum) and Midnight snappers (Macolor macularis...
