The Common Descent Podcast Episode 234 - Snails and Slugs
Jan 4, 2026
Dive into the fascinating world of gastropods, from their diverse habitats to their unique anatomy! Discover the evolution of shells, including how different shapes impact survival. Learn about the intriguing adaptations of predatory snails and the vibrant colors of nudibranchs. Uncover the extreme environments these creatures thrive in, including hydrothermal vents. Plus, explore the significant fossil record that traces their history and the conservation challenges they face today.
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Slugs Are Repeated Shell Losses
- 'Slugs' are simply shell-reduced gastropods and evolved many times independently.
- Shell loss trades defence for maneuverability, moisture access, and calcium economy.
Predatory Snails Use Diverse Tricks
- Neogastropods include many predators using diverse methods like drilling, prying, and venomous harpoons.
- Predatory strategies let slow gastropods succeed as effective carnivores.
Cone Snail Ambushes Are Shockingly Rapid
- Will describes cone snails stretching a proboscis to harpoon fish and inject fast neurotoxins.
- Videos show fish immobilized quickly and swallowed whole by the snail.