Is this a type of algae? Good or bad?

[Doogle1976]

Hi All,
Got a small patch of this growing in my tank!

Can anyone id it and tell me if it's a softy or sort of algae?

Thanks

 

[Crabs McJones]

Hi All,
Got a small patch of this growing in my tank!

Can anyone id it and tell me if it's a softy or sort of algae?

Thanks

Caulerpa Serrulata

 

[Maggie321]

That is some cool looking algae

 

[Soflow Rubio's Corals]

ehhh looks like bryopsis to me.... see how the end feathers out