Franco Banfi / Loggerhead turtle (Caretta caretta) accompanied by pilotfish (Naucrates ductor) swimming near the surface. Vulnerable. Santa Maria Island, Azores, Portugal, Atlantic Ocean
Ben Cranke / African fish eagle (Haliaeetus vocifer) pressurises a Saddle-billed stork (Ephippiorhynchus senegalensis) into dropping a freshly caught fish, so that it can be stolen for a meal. Liuwa Plain National...
Andy Murch / Spiny dogfish (Squalus acanthias) portrait. Rhode Island, New England, USA. August.
Andy Murch / Smooth hammerhead shark (Sphyrna zygaena). Cabo San Lucas, Baja California Sur, Mexico.
Andy Murch / Scoophead shark (Sphyrna media), released specimen. Isla Chepillo, Rio Bayano, Panama.
Andy Murch / Red stingray (Hemitrygon akajei) with Banded houndshark (Triakis scyllium) group and smaller fish in background. Chiba Prefecture, Honshu, Japan. September.
Andy Murch / Rasptail skate (Raja velezi) resting on sea floor. La Paz Bay, Baja California Sur, Mexico.
Andy Murch / Pyjama shark (Poroderma africanum), two in reef, amongst kelp. Simon's Town, Western Cape, South Africa. May.
Andy Murch / Happy Eddy (Haploblepharus edwardsii) amongst Cape sea urchin (Parechinus angulosus) and starfish. False Bay, Western Cape, South Africa. June.
Andy Murch / Nurse shark (Ginglymostoma cirratum) swimming below surface at sunset. South Bimini Island, Bahamas.
Andy Murch / Little gulper shark (Centrophorus uyato). Cape Eleuthera, Bahamas.
Andy Murch / Lemon shark (Negaprion brevirostris) surfacing with open mouth. Tiger Beach, Little Bahama Bank, Bahamas.
Andy Murch / Great hammerhead shark (Sphyrna mokarran) mouth wide open, feeding in shallow water, surrounded by fish. South Bimini Island, Bahamas.
Andy Murch / Cape fur seal (Arctocephalus pusillus) playing with Dark shyshark (Haploblepharus pictus) carcass, seal diving in background. False Bay, South Africa. May.
Andy Murch / Bronze whaler shark (Carcharhinus brachyurus) group feeding alongside Cape gannet (Morus capensis) during sardine run. Wild Coast, Eastern Cape, South Africa. June.
Andy Murch / Banded houndshark (Triakis scyllium) group above sea floor. Chiba Prefecture, Honshu, Japan. October.
Shane Gross / Dugong (Dugong dugon) feeding on Tapegrass (Halophila stipulacea), accompanied by juvenile Golden trevally fish (Gnathanodon speciosus). Marsa Alam, Egypt.
Shane Gross / Dugong (Dugong dugon) male and juvenile Golden trevally (Gnathanodon speciosus) shoal swimming over Turtlegrass (Halophila stipulacea) seagrass bed. Marsa Alam, Egypt.
Alex Mustard / Puffins (Fratercula arctica) swimming underwater. Puffins spend most of their lives at sea and are excellent underwater swimmers, which is how they catch small fish, their main food. , Farne Islands,...
Alex Mustard / Leafy seadragon (Phycodurus eques) male carrying eggs, swims over seagrass meadow. Wool Bay, Edithburgh, South Australia. Gulf of St Vincent.
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...
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...
Shane Gross / Lemon shark juvenile (Negaprion brevirostris) swimming in mangrove habitat near blue crab (Callinectes sapidus), a prey species for the shark. Eleuthera, Bahamas.
Shane Gross / Lemon shark juvenile (Negaprion brevirostris) trying to feed on the leaves of a red mangrove (Rhizophora mangle). As pups, the sharks have to learn to hunt for themselves and sometimes make mistakes....
Sirachai Arunrugstichai / Requiem sharks (Carcharhinidae), including Tiger sharks (Galeocerdo cuvier) and Spottail sharks (Carcharhinus sorrah) caught in the Andaman Sea by longline fishing. Laid in buckets, waiting to be tran...
Nick Garbutt / Walrus (Odobenus rosmarus) amongst group hauled out on shore. Spitsbergen, Svalbard, Norway. July.
Tony Wu / Crab-eye goby (Signigobius biocellatus), mimics crab with eye-spot markings on dorsal fins and back and forth movement. Loloata Island, Papua New Guinea.
Staffan Widstrand / Black-capped Night heron (Nycticorax nycticorax) feeding on fish at fish farm pond, Pusztaszer protected landscape, Kiskunsagi, Hungary, May
Alex Mustard / Saddleback anemonefish (Amphiprion polymnus) barks a warning as it guards a clutch of developing eggs (beneath it) laid on a small stone, below a fold in its home, a Haddon's sea anemone (Stichoda...
Alex Mustard / Giant hogfish (Bodianus macrognathos) male yawning at a cleaning station run by juvenile Spanish hogfish (Bodianus rufus). Jardines de la Reina, Gardens of the Queen National Park, Cuba. Caribbean Sea...
Philippe Clement / Female Common kingfisher (Alcedo atthis) diving and catching a Nine-spined stickleback (Pungitius pungitius) fish, stuns and eats it, Belgium, June.
Mark Carwardine / Spinetail devil ray (Mobula mobular), four with rays of light and sparkle of sun on water, aerial view. Sea of Cortez, Baja California, Mexico. March.
Tony Wu / Male Korean seahorse (Hippocampus haema) giving birth. Kumamoto Prefecture, Kyushu, Japan.
Danny Green / Kermode bear (Ursus americanus kermodei) standing on roots at water's edge, hunting for fish. British Columbia, Canada, September.