Can anyone identify what this is?

[ScubaGirl]

I've tied 6 different cameras now and various lighting conditions and still not able to get anything closer. Even in Photoshop, I'm not able to pull anything better than that pic right now.

These are not the pineapple sponges though I do have some of those as well.

I've been "stalking" the tank too to find if anything comes out of them at night with no luck on there either.

It also doesn't look like blue sponges when I google those. They are quite white/greyish actually.

Thanks for the ideas though, keep them coming. One day we'll figure this out or I'll get my hands on a better camera. One or the other....

Might have to dig out the trusty 35mm camera next, LOL.