The video shows a scuba diver swimming underwater next to a large whale. The whale is swimming gracefully through the water, and the diver is following closely behind. The water is clear and blue, and the sunlight is shining through, creating a beautiful underwater scene. The whale's skin is smooth and shiny, and it appears to be a humpback whale due to its size and shape. The diver is wearing a black wetsuit and has a camera attached to their head, capturing the moment. The whale and the diver seem to be in harmony with each other, moving in sync as they swim through the water.