His ignorance is on full display when he said plutonium.

the Mediterranean has dried up several times in history and it will dry up again, as the African continent collides with Europe. Currently, water flows in at Gibraltar with a very strong current to try to keep up with evaporation, making the Mediterranean saltier and saltier (than the Atlantic) over time. When the strait closes because Africa and Spain push together, the Meditteranean will very quickly dry up.

> When the strait closes because Africa and Spain push together

So really no danger of the Med drying up over the lifetime of a nuclear power station, conservatively 100 years.