The Marieta Islands are a group of small uninhabited islands a few miles off the coast of the state of Nayarit, Mexico, located in federal waters approximately 7.9 kilometres (4.9 mi) southwest of the peninsula known as Punta de Mita, in the municipality of Bahía de Banderas.
The islands are a popular tourist destination because of the abundant marine life populations due to the islands being protected from fishing and hunting by the Mexican government. The ocean water depth around the islands is between 70 and 110 feet.
The Marietas Islands were originally formed many thousands of years ago by volcanic activity, and are completely uninhabited. The islands are about an hour-long boat ride west-northwest from the coast of Puerto Vallarta or a 15-minute boat ride from the resort area of Punta Mita and are visited daily by hundreds of tourists. However, visitors cannot legally set foot on the islands.