Lake Ōnuma, Sea relic lake in Wakkanai, Japan.
Lake Ōnuma sits at coordinates 45.38°N and 141.759444°E, marking the northernmost location of this water formation in Japan.
The lake formed through geological processes that transformed a former marine environment into a freshwater body over thousands of years.
Local communities maintain connections to Lake Ōnuma through traditional fishing practices that span multiple generations in Wakkanai.
Visitors can reach Lake Ōnuma via regional bus networks or private transportation, with designated parking areas near the water's edge.
The lake's waters contain specific mineral compositions that reflect its evolution from ancient seas to its current freshwater state.
GPS coordinates: 45.38000,141.75944
Latest update: March 26, 2025 06:19
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