The video showcases a massive aquarium, filled with various types of fish, including sharks and colorful reef fish

The video showcases a massive aquarium, filled with various types of fish, including sharks and colorful reef fish. Underwater structures mimicking coral reefs and rocks are visible. A scuba diver is present within the tank, likely maintaining or cleaning the environment. The tank is illuminated with blue lighting. People are seen observing the tank from the outside.