Black urchins (Diadema sp.) aggregate on a sandy sea floor. During the day the urchins lock their spines together so that predators, like triggerfish, cannot feed on them.

Name: Black Urchins Diadema Sp Aggregate On
Uploaded: 2013-11-13T00:00:00.000Z
Duration: 11 s
Channel: Danielss
Description: Black urchins (Diadema sp.) aggregate on a sandy sea floor. During the day the urchins lock their spines together so that predators, like triggerfish, cannot feed on them. Stock Footage Video (100% Royalty-free) 5058470 | Shutterstock

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Danielss

Black urchins (Diadema sp.) aggregate on a sandy sea floor. During the day the urchins lock their spines together so that predators, like triggerfish, cannot feed on them.

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