Can some one i.d this fuzzy white thing?

[Arnoldtatts]

Hi I'm kinda new to reefing and I noticed these round white fuzzy things in my sump. Idk if they're baby feather dusters since my sump is full of them. They kinda look like spider eggs. I noticed avfew on live fock in main tank.....thx in advance
http://i1255.photobucket.com/albums/hh639/Arnoldtatts/ive%20done/24F5DA6B-D8DA-42BD-B183-D0B6F30DC757-144-00000002E2502E60_zps110dc33e.jpg
http://i1255.photobucket.com/albums/hh639/Arnoldtatts/ive%20done/BE299973-E95E-4FD2-A94D-CD66B8B786B4-144-0000000323D3CB2A_zps3cbb829b.jpg

[OKDOHK]

pineapple sponge. No worries.

[sarahlovesfish]

Yes, definetly pineapple sponges. I had a big bloom of them one time, but then the slowly decreased. I have only a few left. They are good filter feeders

[Arnoldtatts]

Thx guys really appreciate the help. I also had one that looked a little different in main tank that had a hole like if something hatched or if my arrow crab got into it.