A group of three to four rangers is always on the island along with a resident biologist. They are rotated on a weekly basis. Rules are very strict to maintain Mona as the best ecological site of the Caribbean. No more than a hundred visitors can be on the island at any time. The nesting areas of the sea turtles are closed to the public at night.
Visitors have to bring their own food, drinking water and all camping equipment.
Open fires are not allowed. It is also the visitor's responsibility to carry all solid waste back to Puerto Rico. Showers and bathrooms are available at Playa Sardinera, one of the three camping sites. Brochures provided by the DNR list the rules to follow during a trip to the Mona Island. Upon arrival, rangers offer an additional lecture to all visitors.