Please ID these creatures in the PICTURES!

[RobWein83]

You can see at the end of the white tube and is open with some kind of creature inside which will expel a webbing which will attach to nearby corals. I have no idea what this thing is. I have googled all over for this and I just get back results on feather duster type things. This thing has never come out of its tube, and does not resemble being a feather duster. It will repsond to poking and darts into its long tube. You can see that this tube extends back along the base of the Montipora.

Also, while I am at it... What do you call the pesty hitchhiker zoanthids that have popped up all over my tank and you can see in the pictures. Also, there is some solution to add to the tank to get rid of them. What might that be called?

Lastly, after taking these pictures, I noticed something else in the 2nd picture that you can see just slightly above and to the right of the "tube worm thingy" and underneath a shelf of monti, there appears to be a very thin black and white striped arms of some other creature. Almost looks like arms of a star fish.

Any help would be great!

 

[Salamander]

Vermetid snail. And a big one at that. The big ones aren't much of a problem IME but the the tiny ones can spread quick.

Those zoa looking things sure look like aiptasia to me. Nuke em with kalk solution of something like joes juice.

And that arm under the cap is just a mini bristle star. Common hitchhiker.

 

[Sugar Magnolia]

Vermetid build curly tubes. That looks like a spionid worm - harmless filter feeder. http://www.reefkeeping.com/issues/2003-05/rs/index.php

 

[Superstretch18]

Large vermetid snails can build straight tubes. In the second photo, you can clearly make out the operculum, so it's definitely a snail.

The second photo from the bottom of this link looks like a similar species:
http://www.reefkeeping.com/issues/2005-01/rs/index.php

 

[LeslieH]

Definitely a vermetid and not any kind of polychaete. The tube is calcareous which would rule out any kind of polychaete except for serpulids in which case there would be a feathery crown.

 

[RobWein83]

<a href=showthread.php?s=&postid=14911088#post14911088 target=_blank>Originally posted</a> by Superstretch18
Large vermetid snails can build straight tubes. In the second photo, you can clearly make out the operculum, so it's definitely a snail.

The second photo from the bottom of this link looks like a similar species:
http://www.reefkeeping.com/issues/2005-01/rs/index.php

Yes it looks exactly like that!

 

[RobWein83]

Thanks everyone for the replys. The mystery is solved.

 

[RobWein83]

<a href=showthread.php?s=&postid=14909472#post14909472 target=_blank>Originally posted</a> by Salamander
Vermetid snail. And a big one at that. The big ones aren't much of a problem IME but the the tiny ones can spread quick.

Those zoa looking things sure look like aiptasia to me. Nuke em with kalk solution of something like joes juice.

And that arm under the cap is just a mini bristle star. Common hitchhiker.

Thanks, Joe's Juice. That's what I was looking for.