This dive site, Usujiri Jinjamae, is located in the town of Usushiri within Hakodate City, Hokkaido, Japan. It is renowned for its excellent ecological balance and rich biodiversity, offering a unique cold-water diving experience. The site is suitable for diving all year round, despite significant water temperature fluctuations, from a low of 2 degrees Celsius in winter to a comfortable 21 degrees Celsius in summer. No specific details regarding underwater navigation or historical context are provided.
Divers can anticipate observing a vibrant array of marine life. March is notable for the hatching of Whitefish young, providing a unique seasonal spectacle. From March to April, the site becomes a breeding ground for lingcod, with numerous beautiful egg masses visible. There is also the exciting possibility of encountering various criones and jellyfish riders, adding to the site's rich macro life.
The best time to visit this dive site is during March and April to witness the peak breeding season for lingcod and the hatching of Whitefish young. While suitable for year-round diving, divers should be prepared for cold water temperatures, especially outside of summer, necessitating appropriate thermal protection. Its excellent biodiversity makes it suitable for both scuba divers and freedivers, with potential for macro photography.
