Puerto Caldera in Costa Rica marks the start of our exploration of the Pacific coast of Central America. First stop is the paradisiacal Playa Flamingo, to discover its sugar-white sands and cerulean lagoons. Next is Acajutla in El Salvador, within striking distance of the mangroves and mountains of El Imposible National Park, before we relax with a day at sea. Crossing the border to Mexico, we reach the palm-fringed beaches of Zihuatanejo, where dolphins and sea turtles play in the waves, and Manzanilla, beloved by anglers for the marlin fishing in its waters. The laid-back beach town of Puerto Vallarta comes next, followed by a couple of days on board, as we make our way across yet another border to the U.S. and our final destination, San Diego.