Science Friday Science Friday

Tracking shark populations, one shark at a time

Jul 28, 2026 · 18m

Summary

Catherine McDonald, director of the Shark Research and Conservation Program at the University of Miami, discusses field methods for monitoring shark populations and analyzing their health. She addresses misconceptions about shark sightings, explains the ancient evolutionary success of sharks, and shares surprising findings like remoras entering manta ray cloacas. McDonald also clarifies that Megalodon is extinct and advises listeners to support broader marine habitat conservation to help sharks.

Topics discussed

Podcast introductions and sponsor messages Introduction to shark research and field methods Shark species, sampling, and surprising diet findings Fisheries-independent monitoring and data challenges Shark population trends and recovery in Florida Shark evolution, ancient lineage, and public perception Break and sponsor advertisements Remoras and manta rays: cloacal diving behavior Shark conferences and why shark teeth fossilize Conservation actions and the Megalodon myth Guest bio, credits, and closing sponsors
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