PHOTOS: Take a voyage under the sea at COSI with ‘Unseen Oceans’
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The oceansâ sunlit zone is inhabited by plankton, organisms that sustain nearly all marine life. Despite their small size, planktonic forms are remarkably diverse. Here, visitors to "Unseen Oceans" inspect larger-than-life models of unusual and beautiful planktonic species. ©AMNH/R. Mickens