Heinaicho

Hirauchi Cho (Natsudomari Peninsula) in Tsugaru, Aomori, juts into Mutsu Bay and offers rocky and sandy terrain. In spring, it’s rich with nudibranchs, catfish, and dolphinfish. The clear waters around Oshima Island provide stunning views. Ideal for all levels, it showcases Mutsu Bay’s vibrant ecosystem.

It offers marine life from macro to migratory fish, with early spring bringing abundant nudibranchs like cat-billed, emulonectes, hymenoptera, and eda, plus the charming himeika.