visdeurbel.nl
Seasonal underwater livestream at Utrecht's Weerdsluis where viewers ring a bell to alert the lock keeper to open for migrating fish
Highlights
- New on EvolcAdded 2026-11-05
About visdeurbel.nl
De Visdeurbel runs an underwater camera livestream at the Weerdsluis in Utrecht. Viewers who spot fish on the stream press a bell, which alerts the lock keeper to open the lock so the fish can reach their spawning grounds on the Kromme Rijn.
The service operates each spring during the fish migration season and is currently paused. The site states that it will go live again on 1 March 2027. The project is aimed at members of the public who watch the stream and help the fish, and it also publishes data visualisations and fish photos from past seasons.
The site is in Dutch and links to Instagram and YouTube channels.
Product: Seasonal underwater camera livestream with a bell that alerts the Weerdsluis lock keeper when fish are waiting.
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