This Stuff Actually Has A Base Attached To The Live Rock, The Only Way To Move It Is To Try And Get The Base To Go With It, Or Superglue Gel It To A New Rock When You Brek It Off, I Cant Get This Stuff To Set Up In My Tank But My Buddy Ordered A Box Of Live Rock And About Half Of His Rocks Have It Growing On It, I Beleive It Is Sargassum