Episode Details

Bull sharks are way chillier than you think—thanks to researcher Taryn-Lee Perrior’s genius drum-line method that lures them in, flips them over, and puts them to sleep in minutes. She’s handled over 200 sharks across Queensland rivers and bays as part of her PhD at Griffith University, investigating how human pollution and toxins affect these river-dwelling apex predators. What started with noticing skin issues in juvenile sharks led to a deeper dive into environmental health—since bull sharks bioaccumulate toxins from their prey, they’re perfect bioindicators for our rivers and even our own well-being. Her team’s sampling four rivers and Moreton Bay, even catching a four-meter beast—and the technique even works on tiger sharks. Results are expected by year’s end, offering a powerful lens into how we’re reshaping the natural world—and how sharks might be the best teachers we’ve got.

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