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
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