Abugashima

Abugashima is an island group in Toyama comprising two small landmasses that connect during low tide and display limestone, sandstone, and mudstone formations. The islands rise from the sea and reveal different geological layers shaped by natural erosion processes.

The island group formed through geological processes over millions of years and was later utilized as a resource for castle construction. In the early Edo period, stone blocks from these islands helped build the foundation walls of Takaoka Castle.

The islands are recognized as a protected natural area and serve as a symbol of Toyama's coastal heritage. Visitors come to appreciate the pristine shoreline and understand how Japan preserves such geological formations.

Access to the islands and their immediate surroundings requires special permission, as removing plants and animals is strictly prohibited. Visitors should check current access conditions and protection rules before planning a visit.

The waters surrounding the islands are where warm and cold ocean currents meet, creating an extraordinary range of seaweeds and sea slugs. This rare combination of opposing currents fosters an ecological environment that attracts researchers and nature enthusiasts.