I purchased the 15 lbs “shipped in water to your door” live rock package and it was fantastic. Everything was submerged in the bag and there was no leakage. The rock was completely covered in coralline algae but without pest algae. I found a host of feather dusters, tunicates, and sponges (plus a few freebie snails) on the rock, all of which are thriving since arrival (live phytoplankton daily). The rock itself is full of nooks and crannies for things to live and hide in and is attractively shaped. Overall, this is the best live rock purchase I have made…and I bought live rock back in the 90’s when it came from the Pacific!