Me and my crappy camera again.......

[Siberman]

These guys are all about 1/4 to 1/2 inches long. look like a pale sack of water with spikes/knobs on the main body. They are attached on one end to the rock (seem to like darker places) and appear to have a feeding tube(?) at the other end.








I have several in the tank, like I said, usually under or on back of the rocks.

[crvz]

Any chance you could get larger images?

[Hop]

These guys are all about 1/4 to 1/2 inches long.

They are slightly bigger on my screen But I can't tell what they are

[JY13131]

right!

[Siberman]

One of these days I'm gonna get a better camera, promise.

Anyway (from WetWebMedia) they seem to be Syconoid sponges.