![](https://dtxuqlc5hrfw8.cloudfront.net/media/news/Screen_Shot_2017-04-26_at_10.09.10_AM.png?Expires=2033070170&Signature=dc1AFlmVa7LgXyiijDepmUrj52x1XfJ5zC~V-ngFM1naF4Ovy0fMrIzXJHQRdNit9OxLUGVvNc8ksZ31~-7JQ~Missre~bQqnFMPF3k~2QkyXh0dP3CH-DyvJetJDsAR1nyzVX~ms4kETA1V3Zu8MhDjATDWIbQrVBX3bNG9rIbImYdbNxXd-8RyqTj3glS1Pn-z9khFbTesFb-S7gGJttA9BzkwCBrjl1r6LfonAZ4LfUZhgv~RBDJDxYNAnXsM3QDPjiICrB3gCObf4twEdVjMvgWMbz6vTZovRTclGotRZSs74v1afHcAZY0nVZ54r9j-RAgoHqSBgcMT2oDDRg__&Key-Pair-Id=APKAJHXOEAGC3FD7S5VQ)
Today's video of the day is the salmon cannon. The device helps salmon get around man-made objects in the way of their journey upstream to spawn, and it looks like a fun ride. It works using pressure differencials to move the fish through a canvas tube and can even launch fish in the air over dams or other objects. The video is from EarthFixMedia and is a great example of a simple story within the channels nieche.