The Shell Museum's unique shell-shaped exterior is particularly eye-catching. In the center of the museum is a 5m-long reconstructed model of a choccygosporum, an ancestor of the nautilus, a shell representative of the Orbis period seas about 500 million years ago. You can experience the beauty of the ancient sea.

The oceans cover about 70% of the Earth's surface. Shellfish are said to be the most diverse species in the ocean. Around Japan alone, there are about 8,000 types of shellfish. The Shell Museum is marked by a large building resembling a bivalve shell. At any one time, there are about 5,000 specimens from about 1,500 types on display, along with ecological exhibits.

In addition, there is a full range of video learning materials that allow you to learn about shells, including an actual display of the giant clam, the world's largest bivalve shell, with a shell weighing 194 kg, and a 3D theater. In addition, there are special exhibits showing the ecology of sea angels and ikuones, as well as displays of Hokkaido ammonite fossils.