Choosing this year's swimsuit! / Taking care of the inn! / Matsuzaka's crisis! (4x3)
Bemutató időpontja: 1995 Sze 21
The school organizes a visit to the summer school for 3 days. After the students reach the island, the principal takes the boys for a swim. While swimming in the water, the principal comes up with a competition of staying in the water for a longer time. Most of the children give up and leave, but Shin-chan and the principal stay back and later, fall sick.
