Sigh. They couldn’t resist injecting global warming alarmism into the write-up of the very first airport featured. Ignore that. If ocean levels rise appreciably (iffy, that), I have no doubt that engineers can simply add elevation. Earlier engineers already did something more difficult than that, right? (Do people with climate phobias pretty much all assume that future people will be incurably hapless creatures, considerably inferior to our already sorry selves? Sometimes I wonder.)
Anyway, just for fun, a slideshow of 18 unusual airports, including one with a runway that serves as a main road for cars, too.