live rock questions

[pagano24]

what are the white things that might be growing on my live rocks that look similar to aptasias, and are they bad as well?

 

[meowzer]

W/o a pic it's hard...are they soft? Could be sponges....

 

[pezenfuego]

Here is a picture of pineapple sponges...enjoy

 

[pagano24]

it looks like the tip of that. it looks like the white thing sticking out of that. It looks like a white feather duster. or it looks like an aptasaia but all white. i tried to take a pix but they are not big enough. I also wanted to know if aptasaia grow in bunches together.