2 new strange wall inverts

[Moonraider]

I lost my feather duster worm last month that dropped it's crown and presumably died (never found it and I have a suspiciously fat pufferfish). I've seen the swirly shells on my glass before but never this big and upon close inspection at least one of them has "hairs" on its face in a circular pattern.

The second critter (the one with a fuzzy body and funnel face) is also new. What could these two be?

I have bumblebee snails, a couple super nassarius, ceriths, one astrea, some fish, copepods, detritus worms, and some coral. 55gal.

 

[Sharkbait19]

The round ones are spirobid worms and the fuzzy guys are pineapple sponges. Both are harmless and very common in tanks.

 

[Moonraider]

The round ones are spirobid worms and the fuzzy guys are pineapple sponges. Both are harmless and very common in tanks.

Thanks!