Cookiecutter Sharks: Deep-Sea Glow and Circular Bites

Chris and Angie explore Cookiecutter Sharks, small deep-sea predators that use suction, sharp teeth, and a twisting bite to leave neat circular wounds on much larger animals. They discuss their strange appearance, warm-water range, nightly migrations, and glow-in-the-dark underside, which may help them hide or attract prey. The episode also looks at reproduction, rare reported human bites, and why these little-known sharks are so difficult to study. Finally, they place the species in the wider context of shark conservation, including the ongoing impacts of shark finning. Be sure to monitor National Geographics Museum of Exploration Website for our upcoming live even on Sunday October 11, 2026 HERE Timeline 00:00 Meet the Cookiecutter Shark 01:35 Wild Traits and Parasitic Feeding 03:32 Ocean Tangent Sand Dollars 05:05 Alien Looks Size and Anatomy 09:39 Range Habitat and Midnight Zone 11:58 Do They Bite Humans 17:07 Night Snorkel Manta Rays Story 22:11 Why This Shark Matters 24:14 Shark Finning Conservation Soapbox 33:52 Shark Family Tree 35:20 Ancient Survivors 36:40 Florida Shark Teeth 38:46 Physiology and Senses 44:28 Bioluminescent Glow 51:48 Cookiecutter Bite 56:26 Diet and Migration 58:18 Reproduction Mysteries 01:03:51 Conservation Resources 01:06:05 Final Takeaways == Another thank you to all our Patreon supporters. You too can join for one cup of "good" coffee a month. With your pledge you can support your favorite podcast on Patreon and give back to conservation. With the funds we receive each month, we are have been sending money to conservation organizations monthly. We now send a check to every organization we cover, as we feel they all are deserving of our support. Thank you so much for your support and for supporting animal conservation. Please considering supporting us at Patreon HERE. We also want to thank you to all our listeners. We are giving back to every conservation organization we cover and you make that possible. We are committed to donating large portions of our revenue (at minimum 25%) to every organization we cover each week. Thank you for helping us to grow, and for helping to conserve our wildlife. Please contact us at advertising@airwavemedia.com if you would like to advertise on our podcast Learn more about your ad choices. Visit megaphone.fm/adchoices