Brent Stephenson / Dusky Dolphins (Lagenorhynchus obscurus) porpoising as they swim beside a boat. Off Kaikoura, Canterbury, New Zealand, October.
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Nuno Sa / Whale Shark (Rhincodon typus) accompanied by Pilot Fish (Naucrates ductor) and Remora. The biggest fish in the world has only started to visit the Azores in the past three years due to water temperatu...
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Ole Jorgen Liodden / Blue Whale (Balaenoptera musculus) blowing, with Black-legged Kittiwake (Rissa tridactyla) in the water spray. Spitsbergen, Svalbard, August. Runner up in the Birds category of GDT competition 2014.
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Eric Baccega / Narwhal (Monodon monoceros) crossing tusks above water surface. Baffin Island, Nunavut, Canada, April.
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Doc White / Amazon river dolphin (Inia geoffrensis), Rio Negro, Amazonia, Brazil
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Doug Allan / Killer Whales (Orcinus orca) spy-hopping to observe Weddell Seal (Leptonychotes weddellii) in preparation to knock it from the ice by creating a wave. Marguerite Bay, Antarctic Peninsula, summer. Free...
