What is this??? any ideas????

[cupcake9143]

I was checking out tide pools in Hawaii and saw a few of these and have no idea what they are. Its been bugging me for about a week now!!!

 

[hunt]

http://www.lionfishlair.com/hitchhik...hikerswf.shtml Polychaete - Chaetoplerid.
maybe this? its 3/4 down the pagee.

 

[beansandmia]

Looks like the stuff we have in some of our tanks, white sponge stuff.