His plan was to join a troop of voluntary marine researchers, including a Réunion-based engineer named Fabrice Schnöller, and freedive down about eighty feet, to the seafloor. There he would place satellite tags on the bull sharks’ dorsal fins. These tags would track the sharks’ swimming patterns and locations, alerting locals if they came too near shore. It would be the world’s first real-time shark-tracking system.
