Even though virtually all tourists head over to Isla Mujeres, locals prefer to visit the more quiet Isla Holbox for a day or two. The island is surrounded by blue waters as well as shallow lagoon separating it within the mainland appeals to migrating flamingos, pelicans and whale sharks (from https://top-places-to-travel-in-t65320.snack-blog.com/28513030/an-unbiased-view-of-mexico-trip-highlights