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2. Fish ladder - Wikipedia

   en.wikipedia.org/wiki/Fish_ladder

   Pool-and-weir fish ladder at Bonneville Dam on the Columbia River Drone video of a fish way in Estonia, on the river Jägala FERC Fish Ladder Safety Sign. A fish ladder, also known as a fishway, fish pass, fish steps, or fish cannon, is a structure on or around artificial and natural barriers (such as dams, locks and waterfalls) to facilitate diadromous fishes' natural migration as well as ...

3. Lift net - Wikipedia

   en.wikipedia.org/wiki/Lift_net

   Lift net mounted on a boat, detail from Fishing Boats at Full Moon, a Japanese print by Ohara Koson. 1900-1910. Lift nets, also called lever nets, are a method of fishing using nets that are submerged to a certain depth and then lifted out of the water vertically. The nets can be flat or shaped like a bag, a rectangle, a pyramid, or a cone.

4. Mariel boatlift - Wikipedia

   en.wikipedia.org/wiki/Mariel_boatlift

   Soon after Castro's decree, many Cuban Americans began making arrangements to pick up refugees in the harbor. On April 21, the first boat from the harbor docked in Key West and held 48 refugees. By April 25 as many as 300 boats were picking up refugees in Mariel Harbor. Cuban officials also packed refugees into Cuban fishing vessels. [29]

5. Lock (water navigation) - Wikipedia

   en.wikipedia.org/wiki/Lock_(water_navigation)

   The exit gates are opened and the boat moves out. [11] If the lock were empty, the boat would have had to wait 5 to 10 minutes while the lock was filled. For a boat travelling upstream, the process is reversed; the boat enters the empty lock, and then the chamber is filled by opening a valve that allows water to enter the chamber from the upper ...

6. Bagan (fishing) - Wikipedia

   en.wikipedia.org/wiki/Bagan_(fishing)

   Bagan or bagang is a fishing instrument ( lift net) that uses nets and lights so that it can be used for light fishing, originating from Indonesia. [ 1] Bagan is floated out to the sea to catch fishes, squids, and shrimps, and remain in the sea for several days or even months. The catch would be transported to land using other boats.

7. Gillnetting - Wikipedia

   en.wikipedia.org/wiki/Gillnetting

   Gillnetting is a fishing method that uses gillnets: vertical panels of netting that hang from a line with regularly spaced floaters that hold the line on the surface of the water. The floats are sometimes called "corks" and the line with corks is generally referred to as a "cork line." The line along the bottom of the panels is generally weighted.