Well, I ordered 50 Ilyanassa snails off Ebay. For only 7 bucks. I have quite a bit of algae for them to eat. 8O At any rate, I have 4 fairly large Clibanarius vittatus Hermit Crabs. I was worried about the crabs eating the snails. Two things happened. 1: The snails went to town on the algae, even the hair algae on the glass. 2: The hermits, that also eat the algae, really like the snails. At first they simply held them down and ate algae off the snail's back. Then they found a tasty treat inside. I sat freaking out while they tried to dig out the little buggers from the shells. I am not sure if any snails died though. The few that were assaulted walked away and none are apparently dead. Just wanted others to know, in case you have more expensive snails you don't want molested. Heres a pic of the action.