Your front yard is the beach - world renowned surf in the winter - snorkeling and swimming in crystal clear water in the summer. (wavecation.com)
But this relatively big island, walking around takes up to 15 min, has long white sand beaches with crystal clear water all around. (sanblas-islands.com)
From the pier you can jump into crystal clear waters with good snorkeling right under. (islandsofpuertorico.com)