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Sanriku Fukkō NP, Iwate
Claim this place to tell your story your way.
Anatoshi-iso has 3 sea arches; the little boat threads the middle one when conditions allow. From below, see striped shale and sandstone—and hear the local saying that passing through brings happiness.
Waves hit a sea cave beneath Kaminari-iwa (Thunder Rock), squeezing its air into a thunderous boom. This signature Goishi Coast sound was selected for Japan’s “100 Soundscapes.”
Near Ohama, the boat route passes a small cave with a wonderfully old-fashioned origin story: local legend says an oni, a mythical ogre, scraped it out of the rock. That’s folklore, not geology.
At Chiyojima, wave-driven air pressure can shoot seawater upward—a natural splash effect the boat passes close to. The spray is a hidden highlight among the coast’s better-known rock arches.
Rocks along the route become nesting places for black-tailed gulls. Pairs form in spring, eggs appear in June, and chicks may be visible for about 6 weeks—a seasonal seabird colony viewed from the water.
These are “kakko” small boats, piloted by local fishermen along routes close to shore. Skippers share rock names and wildlife stories, while fishing nets and nori gatherers may remain in view.
