White oval cotton ball looking things????

[fishgeeksrus]

I have tried to search the forums in hopes to identify these things. No luck! They have attached underneath my rock and in my overflows. Does anyone know what these things are? I am at work, so I can't take a picture. The emerald crabs eat them like they are popcorn. They have fine hair that sticks out of one end. Anyone?

[James]

If it looks like this, its just a sponge. Harmless just a filter feeder. will come and go.

[fishgeeksrus]

Thats it! Great! I didn't know if i should be worried. We have a ton of them. Thanks a lot

[reefkeep]

i agree .. just a sponge.. ive gotten bright pinks and yellows before!

[scubadude]

Looks/Sounds like possibly a stomatella snail, you should be able to do a search on them and find some pictures of their topside and compare to what they look like Of course this is if they arent moving. If they are stationary then yeah sponge. I dont narrow emeralds out on eating anything I just saw what appeared to be apparent as two antennas poking out of them in bottom right side of the picture, and I know they dont move much unless disturbed.

[mdrury]

Could it perhaps be a sea squirt or a tunicate? I know most tunicates don't have "fine hairs," but I have a sea squirt in my tank that has a tube worm growing up the side of it, so it could be something similar.

You can do a search for "tunicate" on google and see if any results match what you have.