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Giant Pacific Manta Ray, Revillagigedos Islands, Mexico

Giant Pacific Manta Ray, Roca Partida Sea Mount, Revillagigedos Islands, Mexico
Deborah Smrekar/Nature’s Best Photography

“Manta rays sometimes approach divers; an up-close encounter with such a huge, peaceful animal is unforgettable!” -- Nature's Best photographer, Deborah Smrekar.

See more beautiful ocean photos in our slideshow of winners from the 2010 Nature's Best Ocean Views photo contest.