The video displays a close-up view of a coral reef aquarium. The tank is filled with a variety of corals, including brain corals, staghorn corals, and mushroom corals, which are arranged on shelves and rocks. The corals come in different colors, such as purple, green, and orange, and have various shapes and sizes. The water in the tank is clear, and bubbles can be seen rising to the surface. The lighting in the tank highlights the vibrant colors of the corals, making them stand out against the dark background.