This video features a close-up shot of a sea creature, possibly a worm or eel, swimming in the ocean. The creature has a long, slender body with a greenish-blue color and a red interior. It moves gracefully through the water, undulating its body in a smooth, rhythmic motion. The background is dark, suggesting that the video was taken at a significant depth or during nighttime. There are no other creatures or objects visible in the video, and the focus remains solely on the sea creature.