Every spring, thousands of fish migrate through Dutch waterways to reach their spawning grounds, but barriers like sluices can block their journey. 🐟
The Visdeurbel (“fish doorbell”) helps fish pass safely by alerting lock operators when fish are waiting at the gate.
Did you spot a fish? Press the Fish Doorbell! This alerts our lock operator to let the fish through. The Fish Doorbell is in Utrecht, NL.
