**FILE** Diver Mike Ableson, a volunteer at the New England Aquarium in Boston, cleans the glass of a giant ocean tank in the aquarium , as a shark swims by on Dec. 26, 2005. (Associated Press)
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**FILE** Diver Mike Ableson, a volunteer at the New England Aquarium in Boston, cleans the glass of a giant ocean tank in the aquarium , as a shark swims by on Dec. 26, 2005. (Associated Press)
