1. Scuba diver backpaddles out of whale shark's path

    Scuba diver backpaddles out of whale shark's path

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  2. Swimmer surrounded by giant sea turtles in the Galapagos

    Swimmer surrounded by giant sea turtles in the Galapagos

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  3. Humpback whales surface to breathe beside thrilled swimmers in Tonga

    Humpback whales surface to breathe beside thrilled swimmers in Tonga

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  4. Curious sea turtle swims up to camera to take a bite

    Curious sea turtle swims up to camera to take a bite

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  5. Prehistoric-looking woodpecker is a magnificent backyard sight

    Prehistoric-looking woodpecker is a magnificent backyard sight

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  6. Swimmers scramble to move when humpback whale pod bears down on them

    Swimmers scramble to move when humpback whale pod bears down on them

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  7. Sea turtle heads straight for diver to bite his camera lens and check him out

    Sea turtle heads straight for diver to bite his camera lens and check him out

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  8. Large shark trailing hook & line swims past scuba diver

    Large shark trailing hook & line swims past scuba diver

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