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The world’s greatest migration of animal life occurs every evening when uncountable numbers of mostly small marine organisms rise up from the dark, chilly depths of the open ocean to its surface waters. The people who witness this nighttime migration are blackwater divers—brave divers who throw themselves off a boat in the dark of night in open ocean waters that are, for all practical purposes, bottomless. The animals that we encounter range in size from baby squids smaller than a pinky nail to forty-foot long jellyfish called siphonophores.

Weight 2 lbs
Dimensions 9 × 6 × .5 in
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