TBS has awesome life on theirs. Mine came with yellow, blue, black, orange, and white sponges. Almost a year later and they still have orange, yellow, white, and black. Lots of their rock comes with some good hitchers. But...They have some bad ones too...Gorilla crabs and Mantis shrimp show up often. I didn't get any mantis, but has a few gorillas. For hitchers though, I had tube corals, hidden cup corals, a rose coral, radians star coral, peanut worms, mini brittles, and turkey wing bivalves. It is incredible rock and worth every penny. The shipping is a bit much, but if you can get someone to place an order with you it is a great buy.