# Lake Akan

> A volcanic lake cradled by forested mountains, famous for its rare spherical marimo moss balls and the vibrant Ainu Kotan cultural village on its shore.

- Prefecture: Hokkaido
- Type: Attraction
- Address: Hokkaido, Japan
- Admission: Free
- Official site: https://www.lake-akan.com/

Lake Akan is a volcanic caldera lake renowned for its mysterious marimo, rare spherical green algae colonies that grow naturally only here and in a few other places worldwide. The lake's crystal-clear waters and surrounding virgin forests provide habitat for diverse wildlife including the endangered Blakiston's fish owl. Visitors can explore by boat, soak in lakeside hot springs, and experience the rich Ainu culture at the adjacent kotan village.

## FAQ

### How do I get to Lake Akan?

Buses run from Kushiro Station and Kushiro Airport to Akanko Onsen in roughly 1–2 hours. A rental car suits the long distances of eastern Hokkaido best.

### What is Lake Akan known for?

It is famous for the rare spherical marimo algae, a protected national treasure seen at the lake's Marimo Exhibition Center, as well as the lakeside Akanko Ainu Kotan cultural village, lake cruises, and the smoking Mt Oakan.

### What can I do at Lake Akan in winter?

The frozen lake hosts ice fishing for smelt, snowmobiling, and the 'Fuyu-hanabi' winter fireworks. Nearby Lake Mashu and the frost-flower phenomenon make icy mornings special.

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Source: Lake Akan — Japan Voyage