Tatsunoshima

Tatsunoshima is a small, uninhabited island lying just off the northeastern coast of Iki Island in the sea between Kyushu and the Korean Peninsula, part of the far-flung island territory of Nagasaki Prefecture. Though tiny, it is one of the scenic jewels of Iki, ringed by dramatic sea cliffs banded in layers of colour, riddled with wave-carved caves and arches, and fronted by startlingly clear turquoise water. Designated part of the Iki-Tsushima Quasi-National Park, it is a place of raw coastal beauty best experienced from the water, aboard the sightseeing pleasure boats that circle it from the nearby port.

The island's cliffs are its signature. Sculpted by wind and waves over ages, they display striking horizontal striations and are pierced in places by sea caves and natural arches that the tour boats nose into, revealing the play of light on the water within. The surrounding sea is exceptionally clear and blue, and the cruise around the island reveals a constantly changing procession of rock formations, hidden coves, and seabird colonies. In summer, some boats pause at a sheltered, shallow cove of white sand and transparent water where passengers can swim, snorkel, and feed the fish, turning the sightseeing trip into a small seaside adventure.

Iki Island itself, the gateway to Tatsunoshima, is a fascinating destination in its own right, a place of deep history where some of Japan's oldest recorded contact with the mainland took place, dotted with ancient burial mounds, shrines, beautiful beaches, and the famous Onidake pastures grazed by Iki's cattle and ponies. The island appears in the earliest Japanese and Chinese chronicles and has a rich folklore of oni, or demons, and legends. This blend of history, myth, and natural beauty makes Iki, and its scenic satellite Tatsunoshima, a rewarding destination for travellers seeking somewhere genuinely off the usual routes.

Because Tatsunoshima is uninhabited and undeveloped, the visit centres on the boat cruise and, in season, the swimming stop; there are no facilities on the island itself, though the departure port on Iki has restrooms and services. The cruises generally operate in the warmer months from spring through autumn and depend on calm seas, so it is worth checking sailings and weather in advance. Summer offers the warmest water and the swimming option, while spring and autumn provide fine cruising conditions with fewer visitors.

Getting to Tatsunoshima requires reaching Iki Island first, which is done by ferry, either a fast jetfoil or a slower car ferry, from ports in Kyushu such as Hakata in Fukuoka, or by a short flight from Nagasaki to Iki Airport. On Iki, the sightseeing boats to Tatsunoshima depart from the Ashibe area on the island's east coast, and a rental car or local transport connects the ports and sights. For travellers willing to venture out to Nagasaki's northern islands, the striped cliffs, sea caves, and clear waters of Tatsunoshima offer a memorable taste of the wild, beautiful coast of Iki, far from the crowds of the mainland.