Franco Banfi / Three False clownfish (Amphiprion ocellaris) in Sea anemone (Heteractis magnifica) Lighthouse Reef, Cabilao Island, Bohol, Central Visayas, Philippines, Pacific Ocean.
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Sue Daly / Barrel jellyfish (Rhizostoma octopus) swimming past, Sark, British Channel Islands, UK, September.
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Sue Daly / Anemone hermit crab (Pagurus prideaux) getting into a shell, with a Cloak anemone (Adamsia palliata), Sark, British Channel Islands, UK, June.
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Ingo Arndt / Compilation of various corals including many Fan corals (Gorgonacea sp) from collection at Senckenberg Museum, Frankfurt, Germany.
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Ingo Arndt / Fan Coral (Echinogorgia sp) from Indo-Pacific, in collection at Senckenberg Museum, Frankfurt, Germany.
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Alex Mustard / RF - High magnification photo of Secretary blenny (Acanthemblemaria maria) in boulder brain coral (Colpophyllia natans). East End, Grand Cayman, Cayman Islands, British West Indies. Caribbean Sea. (Th...
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Alex Mustard / Hawksbill turtle (Eretmochelys imbricata) male chomps on soft coral. Jackson Reef, Sinai, Egypt. Strait of Tiran, Red Sea.
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Alex Mustard / A stand of Pillar coral (Dendrogyra cylindrus) growing on a coral reef, East End, Grand Cayman, Cayman Islands
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David Shale / Siphonophore (Nanomia sp) close up of nectophores, and palpons. Gulf of Maine, Atlanic Ocean. Epipelagic species found up to 300m depth.
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Alex Mustard / Boulder brain coral (Colpophyllia natans) photographed with a long exposure with camera rotation. Taken with circular fisheye lens. Grand Cayman, Cayman Islands. Caribbean Sea.
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Alex Mustard / Lion's mane jellyfish (Cyanea capillata) with feeding tentacles spread swimming in the sun in shallow water. Gulen, Norway. North East Atlantic Ocean.
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Alex Mustard / Western clownfish (Amphiprion oceallaris) in a Magnificent sea anemone (Heteractis magnifica). Yillet Kecil, MIsool, Raja Ampat, West Papua, Indonesia. Ceram Sea