Low Stability principle
Lessons from Hellbender
Hold under stone.
Flat-Rock Current Holding

Core lesson
Stay low enough and the current can pass over without taking you.
Biological basis
Hellbenders are large aquatic salamanders with flattened bodies and wrinkled skin, living under rocks in cold, oxygen-rich streams.
Best use cases
Where this lesson tends to be most useful in practice.
StabilityLow profileCurrentRiver lifeQuiet endurance