Help identifying hitchhikers and other oddities

[SuperDaveA]

I've got another set of pictures of hitchhikers and other oddities that have come in on my live rock. Any help identifying them would be greatly appreciated. This tank is a 12 gallon nano that will be host to some corals and 2 or 3 fish in the end.

The first two pictures are some sort of purple coral looking thing

The second set of pictures are some short tan tubes (not hollow) that are literally all over my tank. These popped up maybe 1 week ago or so. My tank has been going for about 2 weeks now.

The last set of pictures which are horribly blurry are some sort of tiny little critters that are all over one portion of my LR. They look like tiny tiny little shrimps or something. They have two antennas sticking out of their head and they move FAST! (which is why the pictures are blurry) I circled the blurs in red. Hopefully it is enough for identification.

Thanks!!

Coralish Thing
<a href="http://s1209.photobucket.com/albums/cc400/CountThis/?action=view&current=Coral2.jpg" target="_blank"><img src="http://i1209.photobucket.com/albums/cc400/CountThis/Coral2.jpg" border="0" alt="Photobucket"></a>

<a href="http://s1209.photobucket.com/albums/cc400/CountThis/?action=view&current=Coral.jpg" target="_blank"><img src="http://i1209.photobucket.com/albums/cc400/CountThis/Coral.jpg" border="0" alt="Photobucket"></a>

Tube things
<a href="http://s1209.photobucket.com/albums/cc400/CountThis/?action=view&current=Tubes-1.jpg" target="_blank"><img src="http://i1209.photobucket.com/albums/cc400/CountThis/Tubes-1.jpg" border="0" alt="Photobucket"></a>

<a href="http://s1209.photobucket.com/albums/cc400/CountThis/?action=view&current=Tubes-2.jpg" target="_blank"><img src="http://i1209.photobucket.com/albums/cc400/CountThis/Tubes-2.jpg" border="0" alt="Photobucket"></a>


Tiny Critters
<a href="http://s1209.photobucket.com/albums/cc400/CountThis/?action=view&current=Critter-1_red.jpg" target="_blank"><img src="http://i1209.photobucket.com/albums/cc400/CountThis/Critter-1_red.jpg" border="0" alt="Photobucket"></a>

<a href="http://s1209.photobucket.com/albums/cc400/CountThis/?action=view&current=Critter-2_red.jpg" target="_blank"><img src="http://i1209.photobucket.com/albums/cc400/CountThis/Critter-2_red.jpg" border="0" alt="Photobucket"></a>

If anyone is interested, here is a picture of the whole tank (for fun)
<a href="http://s1209.photobucket.com/albums/cc400/CountThis/?action=view&current=IMG_1183.jpg" target="_blank"><img src="http://i1209.photobucket.com/albums/cc400/CountThis/IMG_1183.jpg" border="0" alt="Photobucket"></a>

 

[olemiss reb]

1. some sort of leather would be my guess

2. I can't see any tubes. google vermetid snail or featherdusters

3. amphipods

 

[SuperDaveA]

Are amphipods good for my tank?

The solid tubes are loose, they can blow around the tank. They aren't alive as far as I can tell.

 

[SushiGirl]

The tubes are turds from your snails.
The amphipods are good for your tank.
No idea what kind of coral the purple thing is.

 

[SuperDaveA]

That's what I thought the tubes where but I added all my snails after the tubes showed up.... ??

 

[SushiGirl]

Could be detritus from the holes in the rocks being pushed out by worms or other little critters. Looks pretty much the same.

 

[noahm]

first thing looks like a purple sponge. No idea on the second (can't see anything). and for sure amphipods.