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.

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24 unmissable things to see and do in Puerto Rico