Katsuura Undersea Park

The underwater observation tower reaches 8 meters below sea level, providing views of more than 90 marine species through large glass windows.

The marine park opened in June 1974 as a natural aquarium utilizing the coastal waters of the Boso Peninsula in Chiba Prefecture.

The facility exhibits traditional fishing equipment and shell fossils in its museum section, preserving local maritime traditions for future generations.

Located 60 meters offshore, visitors access the observation tower via a connecting bridge, with admission fees of 980 yen for adults and 480 yen for children.

The location marks the meeting point of cold and warm ocean currents, creating conditions for diverse marine life including rockfish, parrotfish, and occasional sharks.

Location: Katsuura

Inception: June 1974

Website: http://katsuura.org

GPS coordinates: 35.13550,140.28478

Latest update: March 24, 2025 17:00