‘Ring’ video doorbell for fishes!
The picture with this posting might seem a bit boring. Strangely enough another 1400 people are watching the same green screen!
You are looking at the live video stream from an underwater-fish-doorbell! Every spring, thousands of fish swim through the Oudegracht in Utrecht (The Netherlands), searching for a place upstream to lay their eggs. But the Weerdsluis is often closed. You can help the fish continue their journey! If you see a fish, press the doorbell. This alerts the lock operator to open the lock.
De operator opens the lock.
In the heart of the city lies the beautiful Weerdsluis, a manually operated lock. When the lock gates are closed, fish are forced to wait, wasting valuable time and energy – making them easy prey for birds and predatory fish.
To help the fish, an underwater camera is installed at the lock. If fish appear on screen, you can press the doorbell! This alerts the lock keeper, who will open the lock when many fish are waiting.
It is all a perfect mix of old and new technology!
Have a look yourself at https://visdeurbel.nl/en/
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