Nothing really in Orlando, since it’s land-locked. (Unless you count Disney Dive Quest) But, just a little North of you is North Florida Springs and Cave Country. Some great diving in a large number of fresh water Springs. You are also less than hour away from the Gulf where there a lot of Charters in the area. (Narcosis in Tampa comes to mind)
Good luck and I hope you find some good diving. If you don’t make to FL very often, it’s well worh taking a few days and getting some diving in.
**D**