These are beautiful Natural "Live Rock" for Saltwater Reef Aquariums. Their size is between 2 in. to 10 in. Currently the rocks are dry, but have been cured once and are free of unwanted marine creatures. The rocks are natural and were harvested from the tropical ocean waters. There are nine rocks with a weight of about 20 lbs. The sale price is $4/lb. or $70 for all. Pick up only from Cobble Hill.