The Izu Islands near Tokyo are perfect for scuba diving. They feature beautiful volcanic reefs and warm waters due to the Kuroshio Current. Divers can see many species, including sea turtles and occasionally, hammerheads and whale sharks. Each island has unique dive sites, like Akinohama in Izu Oshima and Nazumado in Hachijojima. The islands offer opportunities for all skill levels, making them a great diving destination.