The video shows a group of clownfish swimming in and out of the tentacles of a sea anemone. The clownfish are orange with white stripes, and the sea anemone is green. The fish move gracefully, weaving in and out of the tentacles, which sway gently in the water. The scene is serene and captivating, with the clownfish's vibrant colors contrasting beautifully against the green of the sea anemone.