Kim Taylor / Barn swallow (Hirundo rustica), flying over a cattle trough, descending vertically to come in low over the water and drink. Slow motion. The rapid passing of the swallow causes Water boatmen / Backswi...
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Mark Carwardine / Aerial shot zooming in on a superpod of Short-beaked common dolphins (Delphinus delphis), Sea of Cortez, Baja California, Mexico.
John Chan / California sea lion (Zalophus californianus) feeding on a Striped bass (Morone saxatilis), Southern California, USA.
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Espen Bergersen / Aerial shot of three Killer whales (Orcinus orca) swimming close to the surface, Troms, Norway, August.
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Espen Bergersen / Aerial shot of Killer whales (Orcinus orca) near the surface, showing mating behaviour including a male Killer whale displaying penis, Troms, Norway, August.
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Espen Bergersen / Aerial shot of Killer whales (Orcinus orca) near the surface, showing mating behaviour, Troms, Norway, August.
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Espen Bergersen / Aerial shot of a pod of Killer whales (Orcinus orca) swimming near the surface, Troms, Norway, October.
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Espen Bergersen / Aerial shot of four Humpback whales (Megaptera novaeangliae) swimming near to a shoal of Atlantic herring (Clupea harengus), Troms, Norway, January.
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Espen Bergersen / Aerial shot of a Humpback whale (Megaptera novaeangliae) swimming showing belly, Troms, Norway, January.
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Espen Bergersen / Aerial shot of a Humpback whale (Megaptera novaeangliae) showing belly and blowing, Troms, Norway, January.
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Espen Bergersen / Aerial shot of a large group of Humpback whales (Megaptera novaeangliae), Troms, Norway, January.
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Espen Bergersen / Aerial shot of a large group of Humpback whales (Megaptera novaeangliae), Troms, Norway, January.
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Espen Bergersen / Aerial shot of two Humpback whales (Megaptera novaeangliae) coming to the surface to breathe, Sommaroy, Troms, Norway, January.
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Espen Bergersen / Aerial shot of Killer whale (Orcinus orca) carousel feeding close to Tromvik harbour, Troms, Norway, December.
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Espen Bergersen / Aerial shot of Killer whale (Orcinus orca) hunting Atlantic herring (Clupea harengus) using carousel feeding, with herring jumping out of the water and gulls (Larus) circling above, Tromvik, Troms, No...
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Espen Bergersen / Aerial shot of a small pod of Killer whales (Orcinus orca) at surface, with snowy landscape in the background, Skjervoy, Troms, Norway, December.
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Espen Bergersen / Aerial shot of a pod of Killer whales (Orcinus orca) carousel feeding, Skjervoy, Troms, Norway, November.
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Espen Bergersen / Aerial shot of a pod of Killer whales (Orcinus orca) carousel feeding, Skjervoy, Troms, Norway, November.
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Espen Bergersen / Aerial shot of a pod of Killer whales (Orcinus orca) carousel feeding, drone moving closer, Skjervoy, Troms, Norway, November.
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David Gallan / Two Southern right whales (Eubalaena australis) playing in shallows, taken with drone, Tathra Beach, New South Wales, Australia, August.
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John Chan / Black skimmer (Rynchops niger) skimming water surface / feeding, Southern California, USA, July.
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Juergen Freund / Slow motion aerial shot of a Pygmy blue whale (Balaenoptera musculus brevicauda) blowing / breathing at the surface before diving, Banda Sea, Indonesia.
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Remi Masson / European beaver (Castor fiber) eating branches in the water before approaching the camera, River Rhone, Rhone-Alpes, France, June.
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John Waters / Male Common European toad (Bufo bufo) approaching female at surface, Priddy, Somerset, England, UK, April.
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John Waters / Wide-angle shot of a pair of Common European toads (Bufo bufo) in amplexus, jumping into a pond, Priddy, Somerset, England, UK, April.
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John Waters / Slow motion clip of a Brown trout (Salmo trutta) breaching to predate an adult Mayfly (Ephemoptera) emerged on the surface, River Kennet, Hungerford, Berkshire, England, UK, June.
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John Waters / Slow motion clip of a Brown trout (Salmo trutta) predating an adult Mayfly (Ephemoptera) struggling to take off from water, River Kennet, Hungerford, Berkshire, England, UK, June.
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Philippe Clement / Common guillemots (Uria aalge) and Razorbills (Alca torda) swimming and fishing at sea, Fowlsheugh RSPB Reserve, Aberdeenshire, Scotland, UK, May.
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Terry Whittaker / Pod of Killer whales (Orcinus orca) at surface, Grundarfjordur, Iceland, March.
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Terry Whittaker / Slow motion close-up of a large group of Fulmars (Fulmarus glacialis) feeding from a fish processing plant outfall, Grundafjordur, Iceland, March.
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Eric Baccega / Narwhal (Monodon monoceros) at the sea surface. Baffin Island, Nunavut, Canada, June.
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Fred Olivier / Northern sea otter (Enhydra lutris kenyoni) sleeping at dusk, Kachemak Bay, Alaska, USA.
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Fred Olivier / Northern sea otter (Enhydra lutris kenyoni) swimming, floating on its back, Kachemak Bay, Alaska, USA.
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Fred Olivier / Northern sea otter (Enhydra lutris kenyoni) sleeping, floating on the surface, Kachemak Bay, Alaska, USA.
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Roy Mangersnes / Male Walrus (Odobenus rosmarus) at the surface, yawning, Svalbard, Norway. August.
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SCOTLAND: The Big Picture / Pod of Bottlenose dolphins (Tursiops truncatus) surfacing just offshore, Black Isle, Scotland, UK, July.
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Fred Olivier / Whale shark (Rhincodon typus) swimming near the surface, Ningaloo Reef, Western Australia.
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John Waters / Group of Common toads (Bufo bufo) in a mating ball in a pond, Priddy, Somerset, England, UK, March.
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John Waters / Group of Common toads (Bufo bufo) in a mating ball in a pond, Priddy, Somerset, England, UK, March.
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John Waters / Group of Common frogs (Rana temporaria) spawning in a garden pond, with floating spawn, Somerset, England, UK, March.
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Yukihiro Fukuda / Japanese giant salamander (Andrias japonicus) emerging from hole and reaching up to the surface in order to breathe, Hino River, Tottori-ken, Japan, September.
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Konrad Wothe / Large group of South American sea lions (Otaria flavescens) swimming at the surface, Palomina Islands, Peru.
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Ammonite / Two Sperm whales (Physeter macrocephalus) swiming near the surface, moving away from the camera, Azores, Portugal, July.
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Ammonite / Close up of a Sperm whale (Physeter macrocephalus) swimming past the camera, Azores, Portugal, July.
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Brandon Cole / Female Humpback whale (Megaptera novaeangliae), swimming with calf, with a third individual in the background, Tonga
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Brandon Cole / Whale shark (Rhincodon typus) gulp feeding on sardine eggs, Gulf of Mexico, Caribbean Sea.