Help identifying this hitch hiker macroalgae?

[hunterisgreat]

Instead of a flat opposing-frond layout, its a triple frond layout from a cross section... see below. Can't find an example online

http://i1217.photobucket.com/albums/dd393/hunterisgreat/Aquarium%20Stuff/IMG_1622_zps49d3ab97.jpg (http://s1217.photobucket.com/user/hunterisgreat/media/Aquarium%20Stuff/IMG_1622_zps49d3ab97.jpg.html)

[Blind45503]

It looks like Bryopsis to me. I could be wrong but thats my opinion.

[hunterisgreat]

Thats hair algae correct? The main runner of this thing is about pencil diameter

[aujosh84]

I vote caulerpa:

http://www.usc.edu/org/seagrant/caulerpa/SpeciesKey/feather.html

[hunterisgreat]

I vote caulerpa:

http://www.usc.edu/org/seagrant/caulerpa/SpeciesKey/feather.html

Thats what I thought, but I couldn't find an example of caulerpa with a triple frond configuration

To be clear what I mean, see the red on this pic?

http://i1217.photobucket.com/albums/dd393/hunterisgreat/IMG_1622_zps5be9a556.jpg (http://s1217.photobucket.com/user/hunterisgreat/media/IMG_1622_zps5be9a556.jpg.html)

[Blind45503]

It appears I was wrong on that looking at the link you posted I would have to say its caulerpa.

[hunterisgreat]

It appears I was wrong on that looking at the link you posted I would have to say its caulerpa.

it does look like it except for all the feather caulerpa I can find is flat with opposed branchlets... can't find any with this triple configuration

[hunterisgreat]

Found it! It appears to be a highly desirable caulerpa! And native to the gulf/caribbean which explains its presence on my florida liverock

CAULERPA PASPALOIDES

http://live-plants.com/Palmtree.htm
http://marineplantbook.com/marinebookpaspaloides.htm