Though nearly all of tourists go to Isla Mujeres, locals prefer to visit the greater quiet Isla Holbox for per day or two. The island is surrounded by blue waters as well as the shallow lagoon separating it through the mainland draws in migrating flamingos, pelicans and whale sharks (from https://mustseeplacesinmexico54219.blog-a-story.com/8526345/mexico-vacation-articles-can-be-fun-for-anyone