Results of algea culling and Xenia transplant, etc.

Here's the tank post culling of brown Kelp algea:


The transplanted Xenia seems to be doing well:


Except for this piece of Xenia which was dislodged and is now trapped (no way to get in there) in a cave:


A Tunicate/Sea Squirt/Ascidian Zooid (Phylum Chordata, Subphylum Urochordata):


Here's a Hair worm (Spionids Polychaete Worm) with two tentacles - it's tube seems to be assembled from debris. Amazingly the tentacles "grow" from 1" to about 4" and can be articulated in almost any position. Sorry about the blury phot.: