Squids with shells?

Monday, March 13, 2017 by Evan

Did you know that squids used to have shells? Neither did we!

It was hundreds of millions of years ago, but once upon a time the ancestors of squids protected themselves through thick shells. So why did that change?

Scientists guess that the animals of that time got very good at getting through the hard shells of those squids, and slowly the squids adapted to rely less on their shells and more on their speed to stay alive. It seems like that adaptation has stuck, and now most of the modern day descendants of those creatures still don’t have shells.

Who knows, maybe in a few million years lobsters won’t have shells anymore.

 

If you want to know more, check out this article



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