Socorro Island Marine Sanctuary is a remote protected marine area in the Revillagigedo Archipelago, renowned for its rich biodiversity, spectacular underwater environments, and world-class diving opportunities.
Socorro Island Marine Sanctuary is part of the Revillagigedo Archipelago Biosphere Reserve located approximately 600 km southwest of Cabo San Lucas off the coast of Baja California Sur, Mexico. This marine sanctuary encompasses the waters surrounding Socorro Island, the largest island in the archipelago. The area is famous for its exceptional marine biodiversity, including large populations of pelagic species such as manta rays, humpback whales, giant manta rays, dolphins, sharks, and numerous species of colorful tropical fish. Volcanic in origin, Socorro Island features dramatic cliffs, lava fields, and offers rare terrestrial wildlife, including endemic bird species. Established as a marine sanctuary and incorporated into the Revillagigedo Biosphere Reserve to protect the fragile ecosystems, the sanctuary protects critical habitats for breeding, feeding, and migration of marine species. It is often referred to as the 'Mexican Galápagos' for its underwater life. Visitors typically experience the sanctuary via liveaboard dive boats that provide access to pristine dive sites teeming with marine life. Beyond diving, marine wildlife viewing and underwater photography are premier activities. The sanctuary’s isolation and strict conservation measures make it a vital refuge for many endangered and rare species. Visits are tightly regulated by the Mexican government to minimize ecological impact. Socorro Island Marine Sanctuary is a bucket-list destination for scuba divers and marine biologists, offering unparalleled encounters with giant mantas, hammerhead sharks, and large schools of fish amidst volcanic reefs and underwater pinnacles.
Large aggregations of giant manta rays and humpback whales
Steep volcanic cliffs and lava formations providing dramatic underwater topography
Frequent sightings of pelagic sharks including scalloped hammerhead and silky sharks
Remote access enabling pristine marine ecosystems and minimal human disturbance
Frequent and large seasonal gatherings of giant manta rays providing unique dive experiences.
Socorro Island’s terrain features rugged volcanic cliffs and lava flows, creating distinctive habitats.
Home to schools of scalloped hammerhead sharks, silky sharks, and other large pelagic species.