can anyone tell me what this is?

[Cwar21]

can anyone tell me what this is? Thanks for you guys help in advance.

 

[Wes]

Looks like a majano

 

[jdthomas24]

+1 - easy to kill those than the other weed of the sea.

 

[Cwar21]

What's the easiet way to kill them

 

[Guest]

I use aiptasia x and it kills then usually the first time