The video features a close-up view of a fish tank, with a focus on the various types of coral and fish that inhabit it. The tank is illuminated with a purple light, which highlights the vibrant colors of the coral and the fish. The coral comes in different shapes and sizes, some resembling rocks, while others have a more branch-like structure. The fish are small and swim around the tank, occasionally darting in and out of the coral. The water is clear, and bubbles can be seen rising to the surface, indicating the presence of an aeration system.