Ashizuri Underwater Observation Tower

This observation tower in Tosashimizu features a red and white cross-shaped structure that extends partly into the water and connects to shore via a metal walkway. Porthole windows positioned below the surface allow visitors to look directly at fish, coral, and other sea life in their native environment.

This structure was designed in 1972 by the Faculty of Engineering and built as part of developing the Ashizuri-Uwakai National Park. It was created as part of a larger initiative to allow public access to the coastal area while protecting the marine environment.

The tower serves as a viewing station where visitors watch sea creatures going about their daily lives without disturbance. People come here to connect with the ocean in a way that respects the animals living below the surface.

The tower is easiest to reach by taking a train to Nakamura Station, then transferring to two bus connections through the Kochi Seinan Kotsu transportation system. The overall journey takes several hours, so visitors should plan to start early in the day to make the most of their time here.

The underwater windows reveal different marine life depending on the season: sardines appear in winter, horse mackerel in spring, and barracuda in autumn. This seasonal rotation means every visit offers a different experience of sea life.

Location: Tosashimizu

Architects: Faculty of Engineering, University of Tokyo

Official opening: January 1, 1972

Website: http://a-sea.net

GPS coordinates: 32.78597,132.86014

Latest update: December 12, 2025 14:23