is this sponge tissue?

Ryengoth · Nov 17, 2016

Yet another discovery tonight in the wall reef. This rock has been stationary for almost a year now and it looks like it's growing into the back wall. The dark looking matter is actually translucent and like a thick gel. I've felt it under some other rocks but not seen it spread like this in direct light and get coralline encrusting on it. The actual rock structure touching the wall is about 1/2 that mass, like a cone point I used to prop it away from the wall.

Lionfish Lair · Nov 17, 2016

It could be a tunicate.

Ryengoth · Nov 17, 2016

I have some kind of mass that keeps adhering to the floor. I finally slid it loose and moved it up to a rock up top. Will see if it likes the surf and sun. The bottom looks like a mass of dusters but the top looks like rock.

Ryengoth · Nov 17, 2016

Ryengoth · Nov 17, 2016

The streak going across is monofilament from the trap. I saw a 1/2" diameter bristle worm that needs to be moved to the sump. LOL

Supurderek · Nov 17, 2016

Looking like sponges to me! Goodluck with the worm. Shouldn't be too hard to catch!

Ryengoth · Nov 18, 2016

This stuff is growing like mad. I'm afraid it's going to take over my rock! I've seen patches of it on undersides, but when I rotate the rocks it usually disappears once the direct light hits it. I brought in 2 pieces of red tree and one is almost dead but the other has been down behind the rocks on the floor and still looks like it did when I lost it. This stuff has to be from the Fiji live rock I bought when setting the tank up.