[Sharky1973]

The Barrier Reef lies about half a mile off the win ward side of the island. It is the longest barrier reef in the Western Hemisphere and the second longest in the world.
To the east of the Barrier Reef are three separate atoll reefs. There is also a fourth atoll reef, Banco Chinchorro, just to the north in Mexican waters, which will be of particular interest to you if you like wreck diving.
The three Belize atoll reefs are formed on two tiers of submarine ridges: Turneffe and Glover's on one ridge and Lighthouse on a separate ridge farther to the east. This accounts for their similar outlines and NE-SW orientations. Deep marine trenches separate the two ridges.
Inside the reef the water is shallow, with a blue tinge; outside the reef the water is deep and from the air shows a dark royal blue. On very clear days the reef appears as a narrow yellow line dividing the two shades of blue. Only near Ambergris Caye does the reef run so close to a well-populated caye. Here it is an almost solid wall of magnificent coral formation broken only by narrow channels called "quebradas". Here an observant diver can be kept entertained for hours on end by the unending variety, shapes and colors of the tropical coral.


Don’t miss these places, that’s my advice man.