Long-spined black sea urchins Diadema setosum extends an orange ball center that is actually an anal sac.

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Size: 4050px × 2700px
Location: Key West, Florida
Photo credit: © Smitty Smitty / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: anal, animal, dangerous, diadema, life, long-spine, long-spined, marine, nature, ocean, orange, sac, sea, setosum, sharp, spines, urchin, venomous