Something hiddden among my coral

shinobi9119

Active Member
Mystery thing.
Something is hiding under my leather coral. The coral is on a rock But I see this weird thing. It looks like the feeler on a snail and is the color of the sand. It acts like a tentacle. It gathers sand and makes these tubes/tunnels under the rock. I sucked up the tubes one time but now they are there again and so is the unknown tentacle making them.
what is it? I dont think its the corals feeder tentacle thing because it is under the rock. When I lift up the rock all I see are those sand tubes which are actually quite hard.
should I be worried?
 

greenreefer

Active Member
nothing to worry about. I'm not sure of the scientific name, but I've seen them in almost every tank I've looked at closely.
 
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