What is this on my live rock?

[DaveWilson]

Hey, got these things popping up all over our 55gal reef and we're wondering what they are and if they are good or bad?

They look almost like small clusters (the size of a dime or smaller) of light blue eggs, but sometimes they have small hair-like things sticking out of them. Have done some searching but "little blue egg-like things" doesn't turn up much haha. Just wondering if anyone could shed some light? Thanks,

Dave

http://farm6.static.flickr.com/5246/5331604295_ba8d031ae3.jpg (http://www.flickr.com/photos/dwilson675/5331604295/)
IMG_5678 copy (http://www.flickr.com/photos/dwilson675/5331604295/) by Dwilson675 (http://www.flickr.com/people/dwilson675/), on Flickr
http://farm6.static.flickr.com/5162/5332216396_2b1f1cbbb0.jpg (http://www.flickr.com/photos/dwilson675/5332216396/)
IMG_5690 copy (http://www.flickr.com/photos/dwilson675/5332216396/) by Dwilson675 (http://www.flickr.com/people/dwilson675/), on Flickr
http://farm6.static.flickr.com/5126/5331603957_b92f5848d0.jpg (http://www.flickr.com/photos/dwilson675/5331603957/)
DSC_1228 (http://www.flickr.com/photos/dwilson675/5331603957/) by Dwilson675 (http://www.flickr.com/people/dwilson675/), on Flickr

[Skimmerking]

Looks like sponges to me, same what I have in my tank all good

[AquaticFinatic]

Nice aiptasia! lol. Looks to me like a sponge and all is good.

[whatcaneyedo]

Porifera? I'm guessing some kind of sponge. They are hameless. However the aptasia right beside it is not.

[paddyob]

Ha ha. I never even saw the sponge... the Aptasia was in the way! LOL.

Sorry. Bad joke.