Not sure what these are?

[Corndiggly]

Tried finding pics of these in this forum but not having much luck, any ideas what they are?
My trochus seem to eat all the algae but leave these behind.
Pic 1 is green in white light, pic 2 is white with a tinge of red.

And assume this is a bristleworm?

 

[Bob Loblaw]

Google Acetabularia for pic 1

Don't know on pic 2

yup, bristleworm

 

[James M]

Pic 2 looks like a sponge

 

[Corndiggly]

Thanks guys, yep definitely looks like Acetabularia.
Sounds like my fish will munch on it once they are out of QT.

 

[KJ]

Welcome to R2R!!!
Pic 2 sponge.

 

[reef lover]

Welcome to r2r!!