Hi Goin, the other boarders make an excellent point. Tulu and Bicho are very good for the short, inside the reef snorkeling experience you are probably looking for. Blue Hole is a long way out across open sea. Really a divers place. Very deep in the center. There are many lower impact spots that are great fun and don't take all day and cost a lot of money. I'd also highly recommend Daniel Nunez of Tanisha Tours. Excellent captain, and he also does mainland runs to Lamanai, and Altun Ha. Have fun!!