TED-Ed: Which animal has the best eyesight? | Thomas W. Cronin

The animal kingdom boasts an incredible diversity of eyes. Some rotate independently while others have squiggly-shaped pupils. Some have protective lids, others squirt blood. But which creature has the best sight? Which sees best in the darkness? Which sees the most detail? Which animal sees the most color? And finally, which detects motion the fastest? Thomas W. Cronin investigates. [Directed by Josefina Preumayr, narrated by Addison Anderson, music by André Aires].