Hitchhiker ID

[will?]

Any ideas what these might be? Just uncovered part of a coral Ive had for a little while, and found these guys. I assume they had pretty bright light since the rock only blocked the FOV from the front. They look like sea squirts with the little hole at the top? Any ideas on what they are/where they’re from? They move pretty independently from the cluster too. Should I be removing them before they spread too much?
Thank you!

 

[Euphyllia97]

Could it be blue haliclona sponge?

 

[will?]

Could it be blue haliclona sponge?

Just had a look and they seem pretty similar, only that this is split into clumps and seems more smooth than porous, and it also moves, as opposed to a sponge. It’s interesting though, they seem similar

 

[Euphyllia97]

Just had a look and they seem pretty similar, only that this is split into clumps and seems more smooth than porous, and it also moves, as opposed to a sponge. It’s interesting though, they seem similar

Definitely looks like it on thr picture, but your description indeed doesn’t match a sponge. At least not to my knowledge