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kelp-pneumatocyst-macrocystis-10228.jpg |
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Giant kelp
Kelp fronds showing pneumatocysts, bouyant gas-filled bubble-like structures which float the kelp plant off the ocean bottom toward the surface, where it will spread to form a roof-like canopy. Santa Barbara Island. California, USA, Giant kelp, Macrocystis pyrifera. Copyright Phillip Colla, Oceanlight.com
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