Green Galaxy: A very large and gorgeous Paly, coming in at 12-15mm in size. There's a red morph floating around out there somewhere too, but I've yet to acquire. These were originally one of the last morphs brought in by tubs before he got out of the hobby and industry. 

Other common names include Green Galaxy, Green Galaxys, Green Galaxy Zoa, Green Galaxy Zoanthid, Green Galaxy Paly, Green Galaxy Palys (although it is believed to be a Paly).