As far as diving out at the Atolls goes, my favs are Halfmoon Caye Wall and the Aquarium. These dives were a bit murky a week or so ago but all the other times that I have dived them, they were fabulous.
For the Halfmoon dive, I love how you drop above the white sand and as you descend you can often see the tracks made by the conch across the sand. I love how you swim through a space between two coral heads and come out soaring over the lip of the wall. Recently, I loved how an eagle ray came along and soared with me after he was done flashing the others. We spent some quality time together.
I still really enjoy the Blue Hole too but I've done it enough times now, that what I'd really like is a day trip that could combine Halfmoon Caye Wall and Aquarium with another dive from the Turneffe Elbow day trip.
I guess what I really need to do is a liveaboard trip or spend some time out at Turneffe Resort.
A fish and a bird can fall in love, but where will they build their nest?