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Our guide
Kōjima is a small forested island in the Hyūga Sea, about 300 m off the shore of the city of Kushima, Miyazaki, and about 30 hectares in area. It is best known as a field site of the Japanese Primate Research Institute, where Japanese macaques live in wild conditions for study; the field station buildings are on the mainland so as not to disturb the monkeys. Study began in 1947, and since 1952 every individual has been identified so that the population can be followed over time.
The island is a research site, and we have not checked whether or how visitors can reach it, so check local information before you go.
Written by japan-spots.com (2026-09-22) from the sources credited on this page. Distances are straight lines between map positions.
Photos
What this place is
Kōjima (幸島) is a small island in the Sea of Hyūga off the shore of the city of Kushima in Miyazaki Prefecture, Japan. The island is approximately 13 km ESE and 20 km by road from the central built-up area of Kushima. It is approximately 300 m offshore and 30 hectares in area, and mainly forested.Kōjima is best known as housing a field study site of the Japanese Primate Research Institute, where Japanese macaques are held in wild conditions for primatological study. The buildings of the field station are on the mainland so as to minimise disturbance of the monkeys' behaviour. Study of the monkeys began in 1947, and since 1952 all individuals have been marked so that the demographics of the population can be studied. Many investigations have been carried out, including studies of the changes that occur in social dominance over time.
Background text from Wikipedia (CC BY-SA 4.0)
What to expect at this type of place: Island
Getting there
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