Colorful sea anemones and starfish in a tide pool.
Undersea kingdom with mermaids, coral palaces, underwater flora, schools of luminous fish, and a sunken treasure chest.
Old Western town at high noon, with a dusty main street, saloon, horse-drawn carriages, and cowboys having a standoff.
Futuristic underground city illuminated by bioluminescent plants, with advanced technology, diverse inhabitants, and transparent tunnels.