The coral reefs around Puerto Rico’s islands and cays offer some magical snorkelling and diving experiences, and the chance to swim with a huge diversity of tropical fish and larger marine life, including manta rays. Join a catamaran tour or take a water taxi from Fajardo to the deserted island of Cayo Icacos – the largest in a remote collection of sandy cays in La Cordillera Nature Reserve – and you’ll soon be snorkelling in some of the east coast’s clearest waters.

Now check out these incredible private islands you can actually afford to rent

21 unmissable things to see and do in Puerto Rico