The Revillagigedo Islands (also Revillagigedo Archipelago or Islas Revillagigedo) are a group of four volcanic islands in the Pacific Ocean, known for their unique ecosystem. The islands are home to many endemic plant and animal species, and are sometimes called Mexico's "little Galapagos". Socorro island is the most diverse in flora, fauna, and topography. These islands are a spectacular magnet for the largest ocean pelagic animals in the world. Schooling Hammerhead sharks, dolphins, silky sharks, Galapagos sharks, clouds of jacks and barracuda, tuna, wahoo, marlin, oceanic white tips sharks, whale sharks and mantas.