oh Ive never noticed that on mine. theyre all in awkward areas. Its likely a colonial tunicate then, a harmless filter feeder :biggrin:

do they move around?
look like a spounge

nope, theyre sessile so theyll stay where they are. parts may eventually break off and float to a new location where a new colony may start. It could very well be a sponge but theyre really dense and slimy so I dunno. I should see it I can find it in my calfo inverts book.

It's the BLOB, run away!

Just kidding, but could it be a sponge. It is wierd looking.

LOL it is kind of like the blob. The first time I saw one I thought it was one of those large flatworms but it never moved. It kind of reminds me of a really tough skinned wet mushroom in texture when you touch it.

Maybe a sea squirt, but unfortunetly not one of the pretty ones lol. Or maybe some type of sponge.

Whatever it is, it's one Ugly Mo' Fo!

looks like a sponge

definitely slimy like a mushroom.. they dont move, just seem to be getting larger.

is it a sponge of some sort?