Why does the human eye see only a tiny section of the UV spectrum?

There are many things moving around us, but the human eye can only see a tiny fraction of them.

So, I have done some research and learned some possible reasons and explanations:

1. Humans evolved from a prehistoric fish in the sea millions of years ago. Some parts of the UV spectrum can be absorbed by water while others can’t.

The visible light can be absorbed by water, so fish eyes evolved to see with it.

2. So but why are snakes, bees, and cats able to see other parts of the spectrum?

They needed it. Snakes needed to hunt at night because of their limbless nature, they had difficulty with hunting.

When their prey can’t run or see it coming. So they evolved to see infrared, which means they see the body heat of their prey.

Bees need to see nectar from a far distance while flying, so they evolved their eyes to do just that.

3. It will be wasteful for the human eye to see into other spectra, the human brain is a massive optimization machine. It ignores what isn’t useful and focuses on the few useful details so it can make important decisions.

4. If we could see deeper into UV, we would be seeing particles like fog all the time. We will never be able to see as ‘clearly’ as we see today. Imagine seeing the body heat map of everyone you are looking at. That’s useless because you aren’t trying to seek out and eat them up. Deeper into UV means we can start seeing light diffraction from water particles, vira etc that are in the air we breathe now. That means we will be seeing a lot of fog and mist.

We needed to see clearly because the primary way humans hunted was by spotting prey from a very far distance, stalking them, and throwing projectiles at them. All these needed a clear vision.

Humans are majorly day time hunters and have no real reason to see other spectra.

The sun heavily impacted the evolution of the human eye, most of the sun rays fall into the visible light spectrum.