Has anybody ever seen anything like this...

[crossi92]

I just found this growing out of one of my rocks.

http://farm3.static.flickr.com/2303/2109114517_ca385891ff.jpg

[AquaReeferMan]

Yes, Ive come across plenty of those. Its a type of scrolling algae called Padina. Its nothing to worry about, unless they get out of hand.

[crossi92]

Thanks for the reply, I just googled it and that's pretty much what it looks like.

[AquaReeferMan]

Check it out here.
http://www.melevsreef.com/id/padina.html

[crossi92]

Cool, thanks!