The video shows a person scuba diving and exploring underwater ruins. The ruins are covered in algae and coral, indicating they have been submerged for a long time. The person is seen touching and examining the ruins, which appear to be made of stone or concrete. The water is clear, and the visibility is good, allowing for a detailed view of the ruins. The person is wearing scuba gear, including a mask, snorkel, and fins. The ruins are of various shapes and sizes, some with discernible features such as columns or walls. The person appears to be alone in the water, with no other divers or marine life visible in the frames provided.