Reef nutrition

Collector urchins

Chromis

Supporting Member
What is the longest your urchin ever carried one object around? I noticed mine has been carrying the same acro chip around for at least 3 weeks. I wonder how urchins decide what to pick up and hold on to...

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Anyway I bet this is one way coral species get spread around the reefs.
 
Probably a picture floating around somewhere on the internet (or not, since all the free photo hosting sites tend to go down), but I had one who had some encrusting gorgonian on it, looked like a cheap toupee.
 
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