River Smoothness principle
Lessons from Yangtze Finless Porpoise
Glide without a fin.
Finless Freshwater Gliding
Core lesson
A smooth design can move through pressure without making noise about it.
Biological basis
Yangtze Finless Porpoises lack a dorsal fin and use streamlined bodies, echolocation, and agile swimming to live in freshwater river systems.
Best use cases
Where this lesson tends to be most useful in practice.
Quiet movementFreshwater lifeSmooth designEcholocationGentle navigation