The video features a close-up view of a coral reef tank. The tank is illuminated by blue lights that highlight the vibrant colors of the corals. The corals come in various shapes and sizes, some resembling brains, while others have branching structures. The colors range from bright reds and greens to subtle purples and blues. The corals are attached to a rocky substrate, and the water is clear, allowing for a detailed view of the corals' textures and patterns.