lol, Cindy.
I don't dive... and haven't snorkeled since Tahiti (with the ray mantas, oooooh la LAH!)
but I've seen photographs and heard first-hand accounts of people who've done it.
apparently, it's cool to look at, and spectacular to dive...
but there's even *better* places to dive, since Belize has the longest barrier reef in the Western Hemisphere, and the 2nd longest in the world.
info about
The Blue Hole:
http://www.deeperblue.net/article.php/675/16