What is this and this and this????????

[lx5litre]

http://www.saskreef.ca/photopost/showphoto.php?photo=355
http://www.saskreef.ca/photopost/showphoto.php?photo=354
http://www.saskreef.ca/photopost/showphoto.php?photo=353
???????

[Ryan_Lap]

1) I dont know

2) Looks like brittle star

3) Looks like aiptasia

[wil0311]

First on looks like an empty barnacle shell.

[Floop70]

1) I don't know

2) Looks like brittle star

3) Looks like aiptasia
+1


As for the first one, I had something that looked similar when I first setup my tank... it came on the live rock. It was wedged in a crack for the longest time then it moved and I haven't seen it since.

[Froc3]

Looks like a filter feeder of some sort. Don't think anything bad could come out of that little guy.

[toxic111]

#1 may be a burrowing clam...

#2 & #3 is as said above