Pool rules
This is a really interesting and observant article about all the rules of going to the pool in Japan. If you read between the lines you can
learn a lot about the Japanese ways of doing things.
I used to go a sports gym pool regularly and agree that much of what she writes is true. But not everything: there was no whistle to get out and rest. Also, I think a public pool in Honshu would necessarily differ from one in Hokkaido (since it is hot for such a short time up north).