I often wonder how fish get caught for the world’s huge appetite for these tasty sea critters. These fish wheels are pretty ingenious, and I would guess, are a very old invention, one of those perfect machines that has not needed any improvement for a long time.

Fish Wheel #66 on the Banks of the Copper River, Near Chitina, Alaska

Click the link above to read Tom Sadowski‘s full description of how these fish wheels work. Definitely an interesting read!