Interesting facts: rectangular pupils part 2.

December 5th, 2012

The user hhah92 succesfully answered our previous question about rectangular pupils. Congratulations! 🙂

Yes, octopuses, as well as their cousins squisd and cuttlefish (collectively known as Cephalopods) have rectangular pupils.
The reason of rectangular pupils is the process called convergent evolutionwhich takes place when two unrelated species develop very similar body parts or structures, while being totally independent from each other.
The most popular comparison is the development of wings among the birds and among the bats (which are mammals). 🙂

Octopus pupil
Thanks hhah92! 😉

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