One word of caution about sea hares--stay away from caribbean species. From what I have read and heard, the type I have, called olive or olive spotted Sea Hare is the best choice. I've had mine about a month-month and a half, and it's awesome. It just eats algae like crazy, and has never squirted ink. It's definately the coolest invert in my tank. I don't think Living Sea has them anymore, I was there yesterday and didn't see any (unless you already bought it). The LFS I work at in Tewksbury gets them occasionally if you can't find them anywhere else. we sold the last batch at around $10-$12 each, which I think is pretty reasonable. Let me know if you want more info about getting one.