S1, E6: Sharks have ruled our oceans for over 400 million years. In comparison, humans are relatively new visitors. How do we keep both parties safe when our worlds collide? Scientists are keen to find some solutions. Dr. Lauren Meyer and professor Charlie Huveneers visit Port Noarlunga, South Australia, a popular snorkeling and swimming spot. It is also the site of a recent white shark attack, where the woman is lucky to be alive. For the northern research team, their 12-month mission ends at Twin Waters. Bull sharks and people live in and around canals that connect to the Maroochy River and tropical shark highway, so it’s a hot spot for shark and human interactions. To keep everyone safe, Dr. Johan Gustafson and Dr. Bonnie Holmes need to learn how the bull sharks use the river system.