leather coral eating ?

I have a leather coral (4" by 4") it appears to be eating the piece of sea weed I put in for everyone to enjoy.
I rubber band the 2" by 6' sea weed to a rock and drop it in. it will be gone in the morning I go check on it for a few hours when I do this to see who all eats on it. the fish pick at it the small crabs will climb up the rock and pick at it. the snails will get on it and bring it down to the sand bed and and you may have 4 or 5 snails on it one time. the engineer goby is ciming out and taking a bite evry now and them trying to drag it under the peice of leather where he likes to hide. with this coral holding on to it a few fish have nip at the sea weed but not behave like they usually do trying to eat it no snails or crabs on it either. will that coral eat that whole thing itself ?