((spawn
verb: to produce spawn
noun: if one thing spawns something else, it creates it
noun: the eggs of a frog or fish protected by a transparent layer
noun: the mass of eggs deposited by fish or amphibians or molluscs
verb: lay spawn ("The salmon swims upstream to spawn")
verb: call forth
Schauberger
This 'why' has been clarified by various of Nature's phenomena. Amongst others, the stationary trout that stands motionless in torrential alpine streams and flees upstream like lightning whenever danger threatens. Or spawning [The Energy Evolution - Harnessing Free Energy from Nature, The Life-Current in Air and Water]
See Also