The Blue Waters of San Andres, an Island Belonging to Colombia, Are Stunning
New York Times
The island, close to Nicaragua but part of Colombia, boasts waters in seven shades of the color. Counting them — from a boat, from a cay, from the shade of a coconut tree — is a meditative experience.
https://www.nytimes.com/2024/03/11/travel/san-andres-colombia.html