NPS critters ID

[johnf3]

Curious as to what all these different critters growing on live rock in my NPS tank are? I know some are sponges but I’ve included pics of a few I’m not sure of. I’ve seen most of it here and there before but I feed my NPS tank consistently so I’ve noticed new growths popping up everywhere on my live rock like crazy. I love it, the more diversity the better. Just curious as to what they are?

Thanks

 

[ISpeakForTheSeas]

Lots going on in this first pic, but I see some sponges (notably the three, relatively large, white "fingers" popping up on the left near the top of the rock), some bivalves, and what I would assume is a very happy colonial hydroid species.

This one obviously has a white sponge, but I think the little, white growths coming out of the pink (which the pink may be a filter feeder of some kind as well; possibly a sponge if soft or a large foraminiferan if hard/solid) may be either bryozoans or hydroids. There are also a handful of spirorbid worm tubes visible in the pic.

The white here is probably a sponge, but I can't entirely rule out tunicates of some kind from the pic.

The little white things popping up in this are pineapple sponges (genus Sycon).