This dive site, Toujima, is situated in Nakagi, in the southernmost part of Japan's Izu Peninsula. It's renowned for its dynamic underwater environment, shaped by centuries of natural forces and heavily influenced by the nutrient-rich Black Stream. While specific navigation details aren't provided, its diverse scenery suggests varied topography, attracting divers with its unique blend of land and underwater allure and promising exciting discoveries.
Toujima is a vibrant hub for marine life. Divers can expect to see sea turtles year-round, while early summer brings sightings of impressive eagle rays. The site is particularly famous for occasional encounters with large schools of hammerhead sharks, offering thrilling wide-angle photography opportunities. In winter, lucky divers might even spot humpback whales passing offshore, highlighting the rich pelagic activity. The diverse environment supported by the Black Stream also implies a variety of reef fish and potentially interesting invertebrate life.
The best time to visit Toujima depends on desired sightings: early summer for eagle rays, winter for potential humpback whale sightings, and year-round for sea turtles. Hammerhead shark encounters are seasonal but can be spectacular. Due to the influence of the Black Stream, currents can be variable, so divers should be prepared for changing conditions. Both freedivers and scuba divers will find the site rewarding, especially those keen on pelagic encounters and dramatic underwater landscapes.
