Red urchin. Close-up of a red sea urchin (Astropyga radiata), showing its anal sack (or anal cone, upper centre). Photographed off Bunaken National Pa

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Red urchin. Close-up of a red sea urchin (Astropyga radiata), showing its anal sack (or anal cone, upper centre). Photographed off Bunaken National Park, North Sulawesi, Indonesia.

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Size: 5200px × 3454px
Photo credit: © GEORGETTE DOUWMA/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

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