The video shows a blue sea anemone with long tentacles moving slowly in the water. The anemone is surrounded by rocks and coral, and there are small fish swimming around it. The water is clear, and the lighting is natural, suggesting that the video was taken in a natural underwater environment. The anemone's tentacles are swaying gently in the current, and the fish are darting in and out of the frame. The colors in the video are vibrant, with the blue of the anemone contrasting against the reds and greens of the surrounding rocks and coral.