Ingo Arndt / Mastigias jellyfish (Mastigias sp) with mass of jellyfish in background, Jellyfish lake, Palau, Western Pacific Islands, Micronesia
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Ingo Arndt / Mass of Mastigias jellyfish (Mastigias sp) in Jellyfish lake, Palau, Western Pacific Islands, Micronesia, March 2009
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Alex Mustard / Two Florida manatee (Trichechus manatus latirostrus) surfacing to breathe, in morning light. Three Sisters Spring, Crystal River, Florida. USA. January
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Alex Mustard / Bluegill sunfish (Lepomis macrochirus) sheltering beneath a Florida manatee (Trichechus manatus latirostrus). Crystal River, Florida, USA.
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Alex Mustard / Young Florida manatee (Trichechus manatus latirostrus) stays warm in a freshwater spring in winter, at dawn. Three Sisters Spring, Crystal River, Florida, USA. January
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Alex Mustard / Florida manatee (Trichechus manatus latirostrus) swimming under trees in Three Sisters Spring, Crystal River, Florida, USA. January
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Jack Dykinga / Red Mangroves (Rhizophora mangle) lining the brackish water of the La Tovara Wetlands, San Blas, Mexico, Central America
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Michael Pitts / Jellyfish {Mastigias sp} in Jellyfish lake Palau Micronesi
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Juergen Freund / Stingless jellyfish float in brackish water lake, Kalaban Is, Kalimantan, Indonesia
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Eladio Fernandez / American flamingo (Phoenicopterus ruber) taking off in a brackish lagoon, Jaragua National Park, Dominican Republic.
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Robert Thompson / Common hawker (Aeshna juncea) Brackish Moss NNR, County Armagh, Northern Ireland.
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Ingo Arndt / Diver working underwater amongst mass of Mastigias jellyfish (Mastigias sp) in Jellyfish lake, Palau, Western Pacific Islands, Micronesia, March 2009