ID requested: Cruising worm and a nice purple grapey growth

[snapcrackler]

Got a couple of ID's for ya guys...

First off is a very pretty purple growth that popped up next to the rock that one of my sets of shrooms came on. It is growing at a pretty good pace. I could not get a closer pic... I need a zoom digital for Christmas.

Second would be my little lime green worm friend that decided to rove around on the glass tonight. Some facts about wormy:

1. Limish green.
2. kinda flat.
3. Has a nice white tuft of something on it's head, like a... uh.. like a burr.

AAAAND since everyone at AA has been extremely generous, especially reefunner69 with his quiz kudos, I will offer a 250 kudo bounty, per ID, on these critters.

 

[riptide]

I have the same purple stuff... I have always assumed it was a sponge.. The worm is odd.. no idea there..

 

[Hookemhorns_98]

I'd like to know myself...I think I have the same thing. It is grownig very quickly!

 

[snapcrackler]

The plot thickens!

 

[MantisFreak]

Looks like a geniculate coralline algae to me. http://www.botany.uwc.ac.za/clines/kinds.htm

I haven't ID'd the worm (actually I would have an idea if it was swimming) but the tuft of something on it's head says nudibranch or flatworm to me.
Have you ever seen this website http://www.seaslugforum.net

 

[snapcrackler]

Ah so Daniel - son...

I pushed on a "branch" of the stuff and it was stiff enough that it made the entire growth move. As the geniculate type of coralline was described.

I think you're right.....

I did a search for Pterocladia, Microcladia and Rhodophyta (kinds of geniculate coralline algae) and found some pics that match, like this one of microcladia that was pretty close:

http://www.msc.ucla.edu/oceanglobe/specimenphotographs/Plants/Rhodophyta/Microcladia.JPG

250 kudos to you sir thanks for the hot tip!

Oh and I am going to browse for flatworms with at that place too. TY

 

[riptide]

The worm could possible be a juvenile Ribbon Worm... Similar gross anotomy...

 

[snapcrackler]

Do you know if those have a white puff or tuft on their heads?

 

[riptide]

Check out this thread on an adult Ribbon.... Funky white appendages on one end...

http://www.aquariumadvice.com/viewtopic.php?t=14433[/url]