Tropical air defence

When you say anyone else, are you asking if anyone is thinking the same, or if they want sloppy seconds?

It’s a tunnel that gets fish to the other side of the dam if I remember right.

https://boingboing.net/2025/05/20/scientists-built-this-salmon-cannon-to-shoot-fish-over-dams-video.html

To give the fish nightmares for the rest of its life.