Whooshh growing rapidly in Europe, stalled by U.S. regulations
The difference between the Whooshh fish transport system and traditional fish ladders — data suggests — is like the difference between crossing the Sierra Nevada Mountain Range with the Donner Party or snug inside the club car of the California Zephyr. Yes, fish can theoretically navigate fish ladders to get around dams and other impediments, but research over the past seven years shows that it’s a perilous journey that often takes several days and leaves the lucky survivors bruised, battered and too weak to complete their upstream migration. In contrast, the Whooshh transport system literally whooshhes the fish up and over the dam in a matter of seconds via a seamless pneumatic tube system that works something like a gentle vacuum. >click to read< 10:02 
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