Shin Chan Episode 156: Kotoshi no Mizugi o Erabuzo / Minshuku ni Osewa ni Naruzo / Matsuzaka-sensei no Kiki Dazo
Episode 156 of 1358 of Shin Chan, aired August 21, 1995, 25 minutes. Available with English subtitles and dub where released.
Episode summary
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.