Macro Algae ID

[Crabs+Shrimps-69]

I've had small amounts of this algae growing on my rock.
Can anyone ID it and is it likely to be invasive?

Notes in:
In one of the images, the algae is in the bottom left corner of the image with a trochus snails to its right for scale.
The other image shows a small colony of it growing in a patch of GHA.

 

[bradleym]

That would be caulerpa.

 

[Crabs+Shrimps-69]

That would be caulerpa.

Looks like I might have the grape variety
Or this one if Wikipedia is correct:

The grape variety actually looks more similar to a type I intentionally added to my tank when it was cycling, but it died likely because of the instability of a new tank or lack of nitrates.

 

[Crabs+Shrimps-69]

That would be caulerpa.

Thanks for the quick reply by the way

 

[bradleym]

Happy to help!