So I just found this out, news from 2015. Egypt tries to stop Hamas tunnels ...by pumping seawater. Guess the monkeys of IDF are using the same failed method.
www.aljazeera.com
![www.aljazeera.com](/proxy.php?image=https%3A%2F%2Fwww.aljazeera.com%2Fwp-content%2Fuploads%2F2015%2F09%2F510de59223f34c7cb95b6d857cf0d834_18.jpeg%3Fresize%3D1200%252C675&hash=7ec68c46fa752c8b21348077814a0bcf&return_error=1)
Egypt floods Gaza tunnels used for smuggling
Security officials say army has started flooding tunnels used to smuggle goods into the besieged territory.