It would take hundreds of nuclear weapons, given the length of the Suez canal.

What about dragging out lines with acid similarly to how napalm is spread out in a line?

Otherwise carpet-bomb with nuclear warheads should do the trick as well.

Sorry, but why not?

People generally dislike it when other people release large amounts of radioactivity into the environment.

Egypt has a big aquaculture sector. Largest from all African countries and ranking among the top ten countries in the planet. Is a seriously strategic sector for they.