Just 5 seconds ...

Natural light, like that of the Blood Moon, makes one think in terms of the enormous impact light of all type has on animal behavior.

To whit ...

In the world's darkest oceans, turning on a light has profound effects, SHIFTING ENTIRE ECOSYSTEMS WITHIN A MATTER OF SECONDS — and not for the better.

How animals behave in the deep sea depends on their environment, and these creatures like it dark. A new study shows that light pollution from ships may disrupt ecosystems below the ocean surface as much as 200 meters deep.

The artificial light fundamentally alters how fish and zooplankton living at these depths behave.

That means research ships which emit light could throw off their own samples, calling any scientific knowledge we claim about these deep, dark oceans into question.

Natural light also plays a part as seen by the Black Swift 

and it's connect to full moons. 

An international research team led by Lund University in Sweden has managed to study the flight behaviour of the mysterious black swift. They found, among other things, that the black swift rises to extreme heights during a full moon, seemingly catching insects in the moonlight. And, during a lunar eclipse, the birds simultaneously lost altitude. The results are published in Current Biology.

Them Changes - (Buddy Miles/Jimi Hendrix)