I just returned from a trip to Belize diving off of ambergris and Kaye Caulker. I was sadly disappointed at the lack of sea life in general. I made 7 dives including 3 to the outer atoll. The water was clear but just wasn't much to look at other than a lot of nurse sharks. I didn't go to the Blue Hole and the two supposedly good sites included in that trip so I can't speak to them perhaps they are much better.