Our captain, the avuncular “Marvelous” Marvin Mullings, pilots our boat, the Always Something, away from a squall and toward a quiet beach — quiet, that is until all the other boat captains of Providenciales, the most-visited of the Turks and Caicos Islands, reach the same conclusion and join us, forming a moored flotilla. Marvin is one-part seaman, one-part showman; he encourages us to attend to his safety instructions while gently inebriating us on rum punch. We then snorkel above a school of small, blue and utterly complacent fish, next climb back onboard for our next destination, Half Moon Beach.