The Underwater Ecological Park is somewhat more fun than imagined.
Inside are various air spheres and air bubbles, inhabited by a number of Clockwork Cats.
Using an energy source known as Clockwork Energy, they reinforce the strength of the bubbles to make them sturdy, and then begin building single-cat communities inside them. Unlike cat friends who crowd together three to a pot, while they also live in groups, they mostly float alone.
Chapter 1372