During spring vacation and Golden Week, an experiential three-dimensional maze unique to Sanbanze appears as a spring special exhibition. A big maze imitating the burrows of creatures seen at Sanbanze and the tidal flat environment will be set up in the multipurpose hall on the 2nd floor of the Learning Hall. While aiming for the goal from the perspective of small creatures living in the tidal flats, you can learn about the ecology of the tidal flat creatures. Additionally, from April 16 (Thu), the special exhibition 'Now You're Ready! Clam Digging 2026' will also be held, where you can enjoyably learn how to catch and identify Asari clams, how to remove sand, and how to eat them.