Hidden Extension principle
Lessons from Goblin Shark
Launch the jaw.
Slingshot-Jaw Strike

Core lesson
In strange depths, the unseen tool may be the one that reaches first.
Biological basis
Goblin Sharks have highly protrusible jaws that can project forward rapidly to capture prey in deep-sea environments.
Best use cases
Where this lesson tends to be most useful in practice.
Hidden toolsDeep-sea huntingSurpriseReachUnusual design