ID Some Things Please

[Squishie89]

Have some things in the tank I would like ID'ed.

I think this is a tunicate/sea squirt as it has 2 siphons. It used to only have one but it has grown. It is a clear purple.

I believe this may be some form of aiptasia? There is a patch with about 6-10 of these things, the stalks or tube like things are clearish with white spots, and tentacles comes out of them.

This crap is almost everywhere, but it has been slowly decreasing. It is "sticky" in the sense food sticks to it (pellet and shrimp).

No clue about this.

Second time I have found one of these. Yes I know that is a snail, but the thing ON the snail. Today I managed to observe the thing close when I put my hand over it. There is another one larger and more pale on a hermit shell. It is very hard and really stuck on there, and strong, I could not pry it open (but I did not use full strength as I am curious about it). Maybe some sort of scallop?

I have 3 very tiny patches of these brown feathery polyp like things. The polyp things are VERY tiny, only 1 or 2mm.

Pretty sure this is a pineapple sponge, just wanted a confirmation. I have them in my overflow and in my refugium (and all over my chaeto).

Thank you so much for looking!

 

[Squishie89]

Bump?

 

[solar]

First one is a bi valve there like a sponge
Second yes they look like aptasia to me
Dont know next 2 pictures what we were looking at
The orange sticky is a sponge
There clams of a sort
yes thats a pineapple sponge :D

Hope i helped that is very nice rock where you order it from?

 

[Squishie89]

Thank you, that was a huge help. I got my rock from my LFS =P
For the pictures you were not sure about, it is like feathery algae that blows around in the current and is in my PH's, my overflow, all over the rock.