Ack another unknown worm

[Gizmo]

I just saw the sickest thing in my tank today. This worm like thing came out from under/out of a rock and squirted this "stuff" all over then went back into the rock....HELP what the hell was it. Looked like another earthworm, what do I do with it. Frick frick frick... just when things are starting to look up.

[vertex]

Could be a Peanut worm or Eunicid worm. Not typically harmful really but they can start to take a bite or two out of soft corals (like xenia?). They can get quite big though eventually and also eat snails I've read. Might try to catch it with a bottle trap near its hole.

Good luck. And relax, afterall, free worm!!