Nakanoshima Hole

This dive site, Nakanoshima Hole, located off Irabu Island, Japan, is celebrated for its dramatic and unique underwater topography. Divers typically begin their descent at a shallow depth of 5 meters before exploring a breathtaking hole that plunges to 25 meters. The site is renowned for its striking light and shadow contrasts created by sunlight filtering into the cavern, offering a visually stunning experience. While no specific history or navigational details beyond the entry and descent are provided, the site's natural formations are its primary allure. The Nakanoshima Hole is a vibrant ecosystem supporting a diverse array of marine life. Seasonal highlights include sightings of graceful manta rays and schools of vivid red clownfish. The site is also a haven for macro enthusiasts, with documented sightings of pygmy seahorses, Nichirin datydids, and various species of colorful nudibranchs. Other common residents include clownfish and southern scorpionfish, making it an excellent spot for both wide-angle and macro photography. Given its exposure to the open ocean, strong currents can be encountered, making Nakanoshima Hole best suited for intermediate to advanced divers who possess strong buoyancy control and experience in current. The best time to visit often depends on the season, particularly for experiencing specific events like manta ray migrations. Due to the depths and strong currents, the site is generally not recommended for snorkeling or freediving, though highly experienced freedivers might attempt with proper safety protocols.