Fishing the Mekong

Best viewed large. From what I could see, most fishing on the Mekong River in Laos is done with fixed fish traps. Four are anchored to the bank here, the PiP shows others on the bank awaiting use. Essentially, the fish swims into the tapering funnel and is unable to reverse out, with the gate somehow closing behind.

Thanks to Tacheles for suggesting this musical link.