Hundreds of kilometers of coastline define the Dominican Republic (DR) – some of it white-sand beaches shaded by rows of palm trees, other parts lined dramatically with rocky cliffs, wind-swept dunes or serene mangrove lagoons. Whether it’s fishing villages with boats moored along the shores, or indulgent tourist playgrounds with aquamarine waters, the sea is the common denominator. Some of the bays and coves where pirates once roamed are the temporary home of thousands of migrating humpback whales, and form part of an extensive network of parks and preserves safeguarding the country’s natural heritage.