Inner Warmth principle
Lessons from Opah
Carry your warmth.
Warm-Blooded Deep Cruising
Core lesson
A different engine lets you enter colder depths.
Biological basis
Opah are unusual fish capable of whole-body endothermy, using internal heat retention to remain active in cooler deep ocean waters.
Best use cases
Where this lesson tends to be most useful in practice.
Inner warmthDeep workDifferent designCold depthInternal engine