Makes Me Wonder; Evolution or Intelligent design

I've always been in awe at the diversity and proliferation of living things.
In the coldest reaches of the frozen arctic, seals, penguins, polar bears. In the Amazon heat, all manner of Insects, snakes,and mammals. Deep in the oceans, fish and living things beyond comprehension. In the air, birds! Underground, we find moles, worms, bats in caves...
Bats are amazing. They fly by sonar, emitting sounds which bounce back, guiding them on their way.
All the creatures, we are told, evolved over millions of years, the common link, microscopic strands of DNA.
Most species have eyes. How do we account for eyes? Eyes only can serve a species in the presence of light, and a transparent medium, air or water.
How do the simple strands of DNA know about light? Is it some universal absolute? And even if it is, what is the likelihood of a fully transparent medium?
Millions of years ago, mindless DNA experimented with various ways for living things to evaluate surroundings, and survive. Eyes had to be rather complex, even in the earliest stages. Eyes had to evolve in the shallow water of the ocean, in the presence of light.

Fast forward countless generations.
A sighted fish climbs onto the shore. He has the ability to utilize oxygen from water, or air.
This fish we then theorize, by the virtue of "Survival of the fittest", evolved into all living things, sighted, or not.

It's all so unlikely! I'm bewildered.

Maybe a Supreme Being - Intelligent Design - was lonely. He must be very well organized.