Submersion principle
Lessons from Anhinga
Dive like a snake.
Snake-Neck Spearfishing

Core lesson
Go deep, strike clean, then return to dry your wings.
Biological basis
Anhingas swim with bodies submerged and long necks exposed, spear fish with sharp bills, and spread wings to dry after underwater hunting.
Best use cases
Where this lesson tends to be most useful in practice.
Deep workPrecisionEnergy careFishingRecovery