Alex Mustard / Spinner dolphin (Stenella longirostris) pod socialising close to surface. Fury Shoal, Sataya Reef, Marsa Alam, Egypt.
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Pascal Kobeh / Long-snouted seahorse (Hippocampus guttulatus) with prehensile tail twined round seagrass, Etang de Thau Lagoons, Languedoc-Roussillon, France.
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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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Michael Pitts,Michael Pitts / Spinner dolphins (Stenella longirostris) small pod in within Midway atoll, Midway, Pacific.
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Doug Perrine / Hawaiian / Gray's / Long-Snouted Spinner Dolphins (Stenella longirostris longirostris) with mother and young calf. Keauhou, Kona, Hawaii, Central Pacific Ocean.
Alex Mustard / Spiny seahorse (Hippocampus guttulatus) female in a meadow of seagrass. (Zostera marina) Studland Bay, Dorset, England, UK. English Channel.