Uchizan

This dive site, known as Uchizan Reef (Okiyamasho), is strategically located in the central part of Japan's Kerama Islands, surrounded by Maejima, Kuroshima, and Tokashikijima. Primarily a drift dive site, it is characterized by significant currents and is thus recommended for intermediate to advanced divers. The site's immense popularity stems from its reputation as a reliable and active cleaning station for manta rays, attracting divers from around the globe. Uchizan Reef boasts a rich array of marine life. Divers can look forward to frequent encounters with majestic manta rays, often observed undergoing cleaning by cleaner wrasse. Other notable inhabitants include impressive schools of Giant Trevally, elegant Ribbon Eels, Yellowback Fusiliers, Dash-and-Dot Goatfish, Paddletail Snappers, Oriental Sweetlips, Whitetip Reef Sharks, and Moorish Idols, particularly concentrated around the main reef structures. While specific seasonal information for manta ray sightings is not provided, their presence at cleaning stations is generally seasonal. Divers planning a visit to Uchizan should be well-prepared for the dynamics of drift diving and the strong currents inherent to the site. Although the average depth is approximately 10 meters, the maximum depth of 21 meters, combined with challenging currents, necessitates advanced diving skills. Experienced freedivers may also find this site rewarding for observing manta rays, provided they are proficient in managing current-rich environments.