Dutch Citizens are Using a “Doorbell” to Help Fish Pass Through Canal Gate
[ad_1] Fish gate Tasked with helping to ensure that Utrecht’s canals stay alive and convincing everyone that this was not an April Fool’s Day joke, two environmentalists from the Dutch city have invented the world’s first “fish bell” . A live-streaming underwater camera at the “Weerdsluis” lock door allows residents to ring a virtual doorbell…









