white Puffs and free yellow coral!

hey all, its been a while since i posted, been light depriving the tank to kill bryopsis. on checking p on the tank i noticed these white "puffs". they have frilly mouths with a hole down the center. they dont move but are popping up all over(about 30-40). thats the first 2 pics.yesterday i picked up a few soft corals and a sailfin blenny. the owner of the lfs tossed in some freebies,a sponge that was dying and some yellow things. what the hell are these and can i even keep em??

 

pineapple sponges,harmless filter feeders

 

The white things are pineapple sponges. IME, a tank usually goes through a phase where these things are everywhere. They don't harm anything and will most likely disappear in a few weeks.

Not real sure on the coral. Goniopora maybe?

 

thats good to hear...dunno how im gunna keep the goni alive tho...if thats what it is.

Thanks!