Can someone id this for me please

[will_w]

This came on my live rock. Can anyone id it for me and tell me if it is ok to keep in my main tank? Thanks,

 

[bluenassarius]

never seen anything like that before. keep it in your tank and see if it grows. i'd be willing to take a clipping of it and grow it to see what it is. let me know

 

[will_w]

yeah, I like the look of it. I sure would like to know what it is.

 

[will_w]

Anyone else have any idea as to the name of this?

 

[sylphid]

It looks like "black" Turbinaria. Weird, I have never seen any "black" macroalgae.