The southside of Vieques lies the beautiful Sun Bay beach which can be travelled through a ferry from Ceiba, local taxi, or taking a flight from Ceiba, Isla Grande, and San Juan. It's one of the most accessible and family-friendly beaches with slow currents favourable for mediocre swimmers.
With a permit in advance, one can even have an experience for beachside camping on the Sun Bay beach. Also, being the only beach offering public facilities like bathrooms, showers, BBQ grills, and more, it's among the most popular beaches in Puerto Rico.