A 13-year-old boy swam for nearly four hours to shore after his family was swept out to sea in Geographe Bay while kayaking and paddleboarding. After his kayak capsized, the boy continued swimming and alerted authorities, enabling marine rescue teams to locate and save his family 14 km offshore

The tunnel, known as MT-6, is 454 metres long and 14.4 metres wide, and is designed to accommodate both up and down tracks of the bullet train corridor