/Videos /

Blind fish: evolution going backwards

25 Dec, 201301:00

Don't you find it strange that when people go blind we regard it as tragic, but when cave-dwelling fish go blind it's hailed as 'evolution in action'?

There are cave-dwelling fish with a mutational defect that causes them to have scar tissue where they would normally have eyes. Usually, this is an obvious disadvantage, but in a totally dark cave, eyes are not necessary. In fact, it is actually a benefit not to have eyes because they are delicate and easily injured by sharp rocks.

So blind cave-dwelling fish are better suited to that environment.

But is this really a legitimate example of 'evolution'? Evolution is meant to explain how new DNA information arose to turn non-sighted creatures into sighted creatures. But in the case of blind cave fish we have actually witnessed de-volution—because the information for eyes has been corrupted and lost. Once again, 'evolution' goes in the wrong direction.

Get the word out!

Related content

Helpful Resources

Hey! Cookies don't take millions of years to evolve.

Creation.com uses cookies to provide a better experience.