The 8 km long Caye Caulker was one island until a narrow man-made channel across the island became widened by successive tropical, storms starting with Hurricane Hattie in 1961. The northern portion is all mangrove and wild forest. The inhabited southern half of the island begins at the point of divide, known locally as The Split. The Split is a convex dirt- and sand-floored promontory, fronted by small harbour wall and shaded by a few palms. This is the nearest thing Caye Caulker has to a beach.
Caye Caulker itself is fringed by the magnificent Belize Barrier Reef and while the island does not have the same number of spectacular dive sites as Ambergris the outer wall offers spur and groove diving with a few deep canyons, swim-throughs and fissures in the reef . Most dives are beginner or intermediate.
However, Caye Caulker is one of the best cayes for snorkelling. The water is shallow, warm and has abundant life and the many companies offer some of the best-value boat trips in Belize. The inner reef is excellent for novice snorkelers. The water is seldom more than a few feet deep and there’s plenty of variety. Many snorkel trips also visit Hol Chan and Shark-Ray alley, and as these are designated snorkel trips, snorkellers have their own guides and will not feel like a tag-on to a dive trip, as they would from Ambergris Caye.