Nuno Sa / Long snouted seahorse (Hippocampus guttulatus) in captive breeding laboratory at University of Algarve, Portugal. June 2010. Overall winner of the Underwater Photographer of the Year competition 2015.
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Nuno Sa / Whale Shark (Rhincodon typus) passing by baitball, Santa Maria Island, Azores, Portugal, September 2008.
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Nuno Sa / Blue Shark (Prionace glauca) near sea surface and divers in background. Santa Maria, Azores, September.
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Nuno Sa / Manta Ray (Manta Birostris) and Devil Ray (Mobula tarapacana) in background, accompanied by Pilot Fish (Naucrates ductor) and Remora. Santa Maria Island, Azores, September.
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Nuno Sa / Blue Shark (Prionace glauca) near sea surface. Santa Maria, Azores, September.
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Nuno Sa / Blue Shark (Prionace glauca) at the sea surface. Santa Maria, Azores, August.
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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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Nuno Sa / Blue Shark (Prionace glauca) at the sea surface. Santa Maria, Azores, August.
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Nuno Sa / Blue Shark (Prionace glauca) at the sea surface. Santa Maria, Azores, August.
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Nuno Sa / Blue Sharks (Prionace glauca) at the sea surface. Santa Maria, Azores, August.
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Nuno Sa / Sperm Whale (Physeter macrocephalus) group of females with calves. Sao Miguel Island, Azores, July.
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Nuno Sa / Blue Shark (Prionace glauca) with diver in background. Santa Maria, Azores, September.
