What is it?

A friend of mine says that his hermit crabs have transluscent tentacles sticking out of their shells and also the snails have the same thing! I think it must be a parasite of sorts! I've never heard of such a thing? He has live rock, etc. and the tank is for the most part in good shape -water-wise. No fish as of yet, though. These creatures don't seem to be affecting his snails or hermit crabs otherwise. They "reach" for food and draw in theit tenticles. Anyone have any ideas? Are they harmful and will they eventually takeover the tank? Thanks, Wayne

 

pics?

 

I wonder if it is just spaghetti worms that have made home on the shells of the other critters.....pics would help! ;D

 

the're not little anemonies are they?
how many critters do you have? and how many have IT on them...
my friends tank has little critters with anemonies on them...
just a though.

 

Probably just spaghetti worms.....if they have litte tubes made of sand they are fine.....i wouldnt go crazy over it unless you see a population explosion. Pics could help make a positive id.