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.
Image ID: 37146 Lat/Long: 33.47888, -118.60465 (Coordinates: 33° 28' 43.95" N, 118° 36' 16.72" W) Format: Digital 4:3