Kelp frond showing pneumatocysts, Macrocystis pyrifera

Kelp frond showing pneumatocysts. Santa Barbara Island, California, USA, Macrocystis pyrifera, natural history stock photograph, photo id 02435
Small gas bladders -- pneumatocysts -- connect the kelp's stipes ("stems") to its blades ("leaves"). These bladders help elevate the kelp plant from the bottom, towards sunlight and the water's surface.

Kelp frond showing pneumatocysts. Santa Barbara Island, California, USA

Species: Giant kelp, Macrocystis pyrifera
Location: Santa Barbara Island, California
Image ID: 02435
Format: Film 2:3
Copyright ©Phillip Colla, all rights reserved worldwide.
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