A getaway to an island — no matter what kind — should be on any good travel itinerary. Make your escape complete by heading to Crawl Key and spending some time by the water.
If you're going to Crawl Key in Marathon, make sure you leave time for other places too. After you've covered off this water-surrounded land mass, Coco Plum Beach is in the area and will keep you on the move for a bit longer.