Need help identifying some things!!

[alonso24k]

This white sponge looking thing has started growing a few weeks ago can anyone identify this??

Also this guy hitchhiked from my live rock. Is he good or should I remove him??

Lastly I have this on my Duncan now. Is this a new head forming?? My premium snowflake wanted to be in this photo so bad!! Haha

 

[Baby Ray]

Pictures 1-2 are just a filter feeder sponge. No worries
Picture 3 is a stomatella snail. A reef safe algae eater. A great CUC
Not sure about the last picture. Maybe a new head starting to grow? Dose it move?

 

[alonso24k]

Hey baby ray it hasn't moved but today it looks more circular. This photo was taken yesterday.

 

[Baby Ray]

Have you tried touching it? Is it hard?
Maybe they are nassarius snail eggs.
Do you have that type of snail?

 

[ReefWeeds]

I agree with Baby Ray on the sponge and the stomatella! and if that bump looks more circular, I'm thinking a new head is forming. That seems like the place I've seen them pop out.

 

[RyanSweet]

First pic is a sponge. Not sure the species.
Second pic is a stomatella snail.
Not sure on the third.

 

[alonso24k]

I have a couple of baby turbos that hitchhiked and these guys not sure what type of snail they are but they seem to stay clear of the Duncan ..

 

[ReefWeeds]

Astrea snail. Good algae eater in my experience.

 

[Baby Ray]

My guess is that whatever is on the duncan is a new head forming. Keep an eye on it though