ID needed

[Dondante]

What is this? I use to get this on fresh live rock 20+ years ago. I think it was normally on Gulf of Mexico rock from what I can remember.

 

[KrisReef]

Halimeda?

 

[reef lover]

 

[Lam-Luxbid]

Halimeda incrassata, needs strong light and grows slowly

 

[Dondante]

Thanks, guys. It popped up about 3 weeks ago on this flower anemone rock. I was super happy.