Saw this while diving - what is it?

[sykospark]

I was diving off Casino Point in Catalina (an island in the North Pacific, off California).
It was a beautiful, iridescent blue/green/purple macro algae.
Would love to know what it was, tried Googling but couldn't come up with anything great.
Sorry for the poor quality image, twas my first time out with this camera, and it was very hard to capture the beauty of this algae.

 

[enchelycore808]

Looks like Dictyota. Try searching for it. Comes in all kinds of colors and can be very iridescent.

 

[GreshamH]

Catalina Island is in the Eastern Pacific NorPac is a wee bit furthor north.

Pretty sure that is Dictyota flabellata