A vertically oriented video captures a large, cylindrical aquarium in a multi-story indoor space, likely a shopping mall given the background elements like escalators and shop signs. The aquarium is filled with blue water and numerous fish of various sizes and species, some with striped patterns. Inside the aquarium, a diver in a dark wetsuit with flippers and a mask is visible. The diver is seen interacting with the fish, seemingly feeding them or cleaning the tank, as they move around purposefully. Bubbles rise from the bottom of the aquarium, and artificial coral structures are visible. The aquarium is framed by silver bands at different levels, suggesting it spans multiple floors. The background shows blurred architectural details and other people moving in the mall environment.