Revillagigedo Archipelago

Two hundred and fifty miles off Mexico's Pacific coast, the Revillagigedo Archipelago—made up of four remote volcanic islands—rises from deep blue water in sheer, wave-battered cliffs. Beneath the surface, giant oceanic manta rays, massive schools of hammerheads, humpback whales, and countless other pelagic species patrol these protected waters. Powerful currents, nutrient-rich upwellings, and complete isolation have kept this UNESCO World Heritage Site one of the last true frontier dive destinations in the world, earning it the name "the Galápagos of North America."