Belize is home to the Western hemisphere's longest barrier reef, which stretches the length of the coastline, and is often the main attraction for people visiting Belize. Along this reef are thousands of cayes, pronounced 'keys', that provide beach retreats and spectacular dive spots. Among these cayes is the world-famous Blue Hole, an almost perfectly circular collapsed sinkhole, which is over 135m deep and has year-round warm water. While this may be the most sought-after dive spot in Belize, it is by no means the only one, and our experts can recommend countless other sections of this vast reef that are worth exploring. For more on why the Blue Hole is our top pick for what to do in The Cayes of Belize, take a look below.