Juergen Freund / Clark's anemonefish / Yellowtail clownfish (Amphiprion clarkii) prreing out from anemone tentacles. Misool, Raja Ampat, West Papua, Indonesia.
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Philippe Clement / Oosterscheldekering / Eastern Scheldt storm surge barrier, the largest of 13 dams designed to protect the Netherlands from flooding. Neeltje Jans, Netherlands, March 2010
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David Woodfall / Building a sea wall to combat climate change and protect fishing village from flooding, Sundarbans, Bangladesh, June 2008
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Wild Wonders of Europe / Zankl / Newly hatched Loggerhead turtle (Caretta caretta) with its front flippers pressed tight to the marginal scutes of its carapace to avoid predation, Dalyan Delta, Turkey, August 2009
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Claudio Contreras / Balloon fish (Diodon holocanthus) with defensive spines, Puerto Morelos National Park, Caribbean Sea, Mexico, January
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Jeff Rotman / Black Blotched Porcupinefish (Diodon liturosus) inflated swimming in open ocean. Sipadan Islands, South China Sea.
Fred Bavendam / Leopard Sea Cucumber (Bohadschia argus) ejects a mass of long white sticky cuvierian tubules as a defense when disturbed, Manado, Indonesia
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Michael Pitts / Jellyfish in open sea with fish protected in tentacles. Palau, Pacific.
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David Hall / Anemone hermit crab (Dardanus pedunculatus) carrying Anemones (Calliactis polypus) on shell. Mutualism in which anemones are transported to new feeding opportunities whilst providing camouflage and de...
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Shane Gross / Southern stingray (Dasyatis americana) female covering itself with sand to hide. Nassau, Bahamas.
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Gary Bell/ Oceanwide / Oriental Flying Gurnard (Dactyloptena orientalis) with pectoral fins extended in defense posture, Anilao, Philippines