Want to play castaway for a day? From the Caribbean to California, these nine islands offer pristine beaches and abundant wildlife.
Be sure to: Explore the white-sand beach—home to endangered leather back turtles—and snorkel in the waters around Sandy Spit (pictured) for the ultimate escape.
How to get there: By private boat, or schedule a day sail out of Tortola or Jost Van Dyke. For more info, visit bviwelcome.com.