What are thooooseee??!!

[absolutkush]

I've got these on my protein skimmer and in the filer compartment of my aio tank. No clue what they are. Anyone?

Also have some what I believe are white sponges.

 

[Manpeckz]

The white guys are pineapple sponges I believe. Not sure about the egg looking mass..

 

[DrkNMighty]

The white things are pineapple sponges. Not sure on the other thing though.

 

[ISpeakForTheSeas]

No clue what they are. Anyone?

As mentioned, the white things are pineapple sponges; the other thing is probably a colonial tunicate species (harmless filter feeders, but they may be highly invasive - if you see them growing on corals or other things you don't want to be smothered, remove them; keeping them isolated in a spot you can easily contain/remove them is a good idea).