Alex Mustard / A diver explores Silfra Canyon, a deep fault filled with fresh water in the rift valley between the Eurasian and American tectonic plates at Thingvellir National Park, Iceland. May 2011. In this phot...
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Shane Gross / Caribbean reef shark (Carcharhinus perezi), two from below, one close up. Caribbean Sea off Gardens of the Queen National Park, Cuba.
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Shane Gross / American crocodile (Crocodylus acutus) with open mouth amongst Seagrass (Alismatales). Gardens of the Queen National Park, Cuba.
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Gary Bell/ Oceanwide / Spotted Wobbegong (Orectolobus maculatus), Solitary Islands Marine Park, New South Wales, Australia
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Gary Bell/ Oceanwide / Grey Nurse Shark (Carcharias taurus), Solitary Islands Marine Park, New South Wales, Australia
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Gary Bell/ Oceanwide / Surfer, Solitary Islands Marine Park, New South Wales, Australia
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Gary Bell/ Oceanwide / Tropical reef, Great Barrier Reef, Queensland, Australia
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Gary Bell/ Oceanwide / Red tide, Heron Island, Great Barrier Reef, Queensland, Australia
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Gary Bell/ Oceanwide / Tropical island, One Tree Island, Great Barrier Reef, Queensland, Australia
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Gary Bell/ Oceanwide / Green Sea Turtle (Chelonia mydas), Heron Island, Great Barrier Reef, Queensland, Australia
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Gary Bell/ Oceanwide / Green Sea Turtle (Chelonia mydas), Heron Island, Great Barrier Reef, Queensland, Australia
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Gary Bell/ Oceanwide / Sea Goldie (Pseudanthias squamipinnis) school in coral reef with feather stars, Great Barrier Reef, Queensland, Australia
