Algae ID?

[WhenKeepinItReefGoesWrong]

I've got this interesting looking algae that came on my Tampa Bay Saltwater live rock and am wondering if anyone has an ID? I'm talking about the shell looking algae, not the red algae behind it.

Thanks!

 

[lapin]

Hum, Algae?
Both Lobophora and Padina look pretty close but being white is not what you normally find.

 

[WheatToast]

Padina look pretty close but being white is not what you normally find.

Definitely Padina, a calcified brown macroalgae! It is also known as Scroll algae and Potato algae, and many species do take on a bright white coloration:

More information:
https://www.reefcleaners.org/store/out-of-season/scroll-algae-detail
https://www.marineplantbook.com/marinebookpadina.htm

 

[WhenKeepinItReefGoesWrong]

Definitely Padina, a calcified brown macroalgae! It is also known as Scroll algae and Potato algae, and many species do take on a bright white coloration:

More information:
https://www.reefcleaners.org/store/out-of-season/scroll-algae-detail
https://www.marineplantbook.com/marinebookpadina.htm

That's it! Thanks so much!

 

[Duncan62]

Hum, Algae?
Both Lobophora and Padina look pretty close but being white is not what you normally find.

New growth will emerge from the white die off. In couple weeks you'll be surprised.