Odd creature

[Matthias7]

i recently bought a maricultured acro. On the mari plug there is a creature that lives in a tube with a trap door type lid. It releases a stringy substance like a versatile snail does. Nearly impossible to picture because of the trap door. Only thing I am able to is 2 small antenna. Is it possible that this is a vermatid (would be fairly large in comparision to other vermatids). Are there any other creatures like vermatids?

 

[Tahoe61]

Sound exactly like a larger Vermatid type.

 

[Reefing Madness]

Yea, sounds like a Vermatid

 

[redfishbluefish]

Agree, vermetid. They do come in different sizes. Here are a couple guys hanging out on a 1 1/2 pipe that enters my filter sock.