One of the reasons our kids invited us to Belize was to scuba dive.  We became certified several years ago in order to dive with them in Hawaii but the dives there were not as wonderful as the ones they had experienced in Belize.  So, we spent several hours at their favorite dive shop getting re-certified and then enjoyed several dives.  They were more beautiful than Hawaii and easier since they are typically drift dives.  The dive shop was wonderful to keep a close eye on us since we are such novices and, all in all it was a great time.