The video shows a person wearing a snorkel mask and swimming underwater. The person is swimming near a large rock and is surrounded by various types of sea plants. The water is clear, and the person appears to be exploring the underwater environment. The person's movements are slow and deliberate, allowing them to observe their surroundings closely. The sea plants are swaying gently in the water, and the rock appears to be covered in algae. The person seems to be enjoying the experience, taking in the sights and sounds of the underwater world.