Green feather duster or what?

[entranced]

So i was just looking at the rocks and saw this thing that wasnt there yesterday, it doesn't lool like the feather dusters i have in my tank which are all stripped black & white.

Anyone knows what it is?

 

[entranced]

It's changing in size rapidly, and doesn't have the two black antenna moving in the middle that my dusters have

 

[Gargoyle]

Does it retract when you touch it? Can you get a picture of it side on?

 

[entranced]

Does it retract when you touch it? Can you get a picture of it side on?

i'm crazy it isnt changing size, just found out it's some kind of algae, i kinda like the shape

 

[damsels are not mean]

yeah i think it's some species of umbrella algae

 

[damsels are not mean]

I feel like I've seen umbrella algae in a thread somewhere before and it was one of those ones that looks cool but is invasive if not removed but I can't find that thread and might be making that up. I wouldn't remove because I like it but I also like to live dangerously.

 

[reefz]

Umbrella algae.