You can get it from the Marine Center. you have to order it online at 2.99 lb then $10, per 50lb box, for shipping by UPS to your door. Other than that the sponsor of this site liverocks.com has some excellent live rock. Theres is about the same price but shipping is a little higher. I have ordered from both and the rock from liverocks.com is so much better. If you look at my photo gallery the rock that has the purples on it is from Liverocks.com and the other that is kind of yellowish green color is fiji from the marine center.