A natural landmark of Banderas Bay, the Marieta Islands are one of the most important places for marine bird watching in México and the eastern Pacific tropics, as well as being a shelter for countless varieties of marine species. This wildlife refuge is a protected natural zone, and its characteristics make it a unique place worthy of visiting and respecting.Volcanic protected islands
The islands were formed during the Cretaceous era by volcanic activity that created ragged formations, ideal places to shelter life. Although their names are somewhat different, the two islands that make up this archipelago (one round and one long) have basically the same formations, dominated by vast caves and cliffs.