Roca O'Neil dive site
Home to the Mexican Naval Station, Socorro Island lies about 30 miles south of San Benedicto. The island is about 10 miles across and is surrounded by exciting dive sites such as Cabo Pearce, The Aquarium, Roca O'Neil and Punta Tosca. Dolphins, hammerheads, mantas and other sharks are commonly spotted here.

The Socorro Mockingbird, Mimus graysoni is one of the fifty rarest birds in the world. This species, endemic to Isla Socorro is critically endangered at less than 400 individuals. This is mainly due to loss of habitat created by sheep that have been introduced to the island.