Salmon cannon video: Helping fish swim up obscured rivers.

The Salmon Cannon, an Ingenious Solution to Helping Salmon Swim Up Rivers

The Salmon Cannon, an Ingenious Solution to Helping Salmon Swim Up Rivers

Slate in motion.
Oct. 3 2014 5:41 PM

The Salmon Cannon

An ingenious solution to helping salmon travel up obscured rivers.

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The best part? The salmon seem to gladly enter the cannon on their own.

Dallas Jensen is a regular video contributor to Slate.