The Devil's Backbone is a long, shallow reef running along the northern coast of Eleuthera. It is treacherous to navigate — vessels go through with a local pilot or not at all — and is responsible for a string of wrecks along its length, several of which are now popular dive sites.
Diving and snorkelling here is excellent: coral heads, shallow swim-throughs, and the broken-up wrecks. Most trips run out of Spanish Wells or from Harbour Island. Outside conditions on the Atlantic side can be rough; the reef is best in calm weather.