I just bought 5 nassarius snails and a sea hare over the weekend. Today, I saw 4 of the snails eating/cleaning? on the butt of the sea hare. Also, one of my cleaner shrimp was on back in the mix as well. Are they cleaning or attacking/eating him?! Hmmm... I just moved all the snails to the other side of the tank, but the cleaner shrimp is back, and closer inspection, he is picking inside his @$$hole?!