Spiral-Tusk Signal principle
Lessons from Narwhal
Carry the tusk spiral.
Spiral-Tusk Ice Travel
Core lesson
A strange feature can become the mark by which the world remembers you.
Biological basis
Narwhals have a long spiral tusk, usually in males, and travel through Arctic waters and sea ice while using echolocation and social behavior.
Best use cases
Where this lesson tends to be most useful in practice.
SignatureUniquenessArctic travelIdentityStrange gifts