Create an optical illusion of a majestic underwater city, where the buildings appear to be made of flowing water and shimmering coral, with fish swimming through the air as if it were water.

Craft an optical illusion of a mystical underwater metropolis. Here, the architectural structures give the impression of being forged from cascading water and glimmering coral reefs. Shoals of tropical fish can be seen swimming in the air, treating it as if it were their natural aqueous habitat. The city emits an aura of majesty and otherworldliness, presenting a surreal spectacle to behold.