1. Serina went scuba diving. 2. Serina lost her camera. 3. The children and their teacher took the camera back to school. 4. The teacher put a message on social media. 5. Thousands of people shared the message. 6. One of them was Serina Tsubakihara. 7. Mr Park Lee looked at the photos. 8. Serina saw the photos on social media.