Japanese Eels Master Escape from Predator Stomachs

First-ever X-ray videography reveals juvenile eels' unique tactic of reversing through fish digestive tracts to freedom

Study shows eels moving tail-first up the esophagus and out through the gills of predatory fish.
Researchers captured this behavior using advanced X-ray videography and a contrast agent.
Out of 32 eels swallowed by dark sleeper fish, nine successfully escaped.
The escape process typically took around 56 seconds to complete.
This discovery offers new insights into predator-prey dynamics and potential applications for studying other species.