A. Gary Revell, a professional bait collector, demonstrates worm
Fundamentals of burrowing in soft animals and robots. - Abstract - Europe PMC
Worm 'grunting' is all in a day's work
DIY Fiddling: How to Gather Fishing Worms - Game & Fish
Frontiers Predator-Prey Interactions and Eavesdropping in Vibrational Communication Networks
File:Worm-Grunting-Fiddling-and-Charming—Humans-Unknowingly-Mimic-a-Predator-to-Harvest-Bait-pone.0003472.s003.ogv - Wikimedia Commons
Catching worms with vibration : r/Fishing
Worm Charmers Scientific American
Frontiers Fundamentals of burrowing in soft animals and robots
The Secret Lives of Words column: Charming worms and vermicelli
File:Worm-Grunting-Fiddling-and-Charming—Humans-Unknowingly-Mimic-a-Predator-to-Harvest-Bait-pone.0003472.s007.ogv - Wikimedia Commons
Why You Should Try WORM GRUNTING
Worm Grunting