White stuff on my rock

So recently i noticed this white things growing on my live rock, and also on the rock that i have my toadstool fragged on.. should i rip it out? or its not dangerous.. i also have 2clowns in the tank

here are pix

http://i941.photobucket.com/albums/ad251/petmania/IMG_5849.jpg

http://i941.photobucket.com/albums/ad251/petmania/IMG_5851.jpg



let me know if its hard to see the pix.. i will give it another try

 

Cant tell for sure on most but the bottom center white thing is a pineapple sponge. A harmless filter feeder. My sump is full of the and have a few in my dt as well.

 

Here are some more pictures:

http://i941.photobucket.com/albums/ad251/petmania/IMG_5857.jpg

http://i941.photobucket.com/albums/ad251/petmania/IMG_5855.jpg

 

cool sponges!!!! nice pics!

 

so it is a pineapple sponge i looked up other sources and it does look like it.. but now my question is, IS IT DANGEROUS to my reef and my clownfish?

 

Not at all imo. And you'll find that they are mobile. I have one in my DT that has made it's way from the bottom corner to the top up by my overflow.

 

ok cool! thank you very much