Observatory for fish / 魚の為の展望台

New one of "for fish" series has been uploaded.
I don't have an idea what happens on fish when it goes up in the cylinder where the pressure is below 1 atm..
http://www.designattempt.com/#!observatory-for-fish/trotm
「魚の為の」シリーズに新作登場です。
「展望台」に登って大気圧以下になるとお魚さんがどうなるのか。
どうなんでしょう。
http://www.designattempt.com/#!jp-observatory-for-fish/a6r2b