From the small fishing village of Las Croabas, embark on an all-day motorboat snorkeling excursion to otherwise unreachable coral reefs in La Cordillera Nature Reserve. Once the anchor has dropped into the turquoise water off Cayo Icacos, explore the sun-dappled, underwater world of giant sea fans, elkhorn corals and brilliantly-colored fish. After a delicious picnic on board, cruise to other sandy islets, such as Cayo Lobos and Isla Palominitos, for more fun. If you prefer a day of sailing, consider the Erin Go Bragh, a classic yacht with a salty captain. At sunset, return to port and Yuquiyú.