The Tsumajiro Coast and the Ashizuri Kaiteikan Underwater Observatory
The Tsumajiro Coast, located on the west side of Tatsukushi Bay, is a place of geological interest and a tourist attraction. Its ground, which gradually rose from beneath sea level to its current position, is composed of mud flats and a former estuary, and contains many different types of trace fossils. Visitors can walk south along the shore toward the retro-futuristic Ashizuri Kaiteikan Underwater Observatory. The red-and-white, pipe-like entrance can be reached along a raised walkway from the end of the walking path. The distinctive aquarium structure has an observation chamber 7 meters below the surface of the sea, where visitors can view fish and other marine creatures in their natural habitat.