who can identify this?

bang guy

Moderator
Only if they're REALLY hungry.
These guys should eventually settle into your sandbed or a rock somewhere.
 

bang guy

Moderator
They are one of the few critters that can eat detritus off the surface and under the sand. Their reproduction rate is very high if an abundance of detritus is available. The population will climb until the population is in line with the food supply.
 
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