All I can say is wow! This stuff is great. Tons of life, sponges, a fan worm, live barnacles or I think what are barnicles never seen live ones before, couple hermits, couple snails all made the trip and this was just the first part of the package. It did seem that the gorrilla crabs got together for a road trip and party on my rock though lol. Got 10+ of the little buggers off the rock. Now to watch and see what else pops out. For the little critters, like hermits, should I throw in some food for them while waiting for the second part?