pupil

WTF Fun Fact – The Moken’s Perfect Underwater Visions

by
WTF Fun Fact - The Moken's Perfect Underwater Visions

Children of the Moken tribe of Thailand have a technique to achieve perfect vision underwater. They constrict their pupils and change their lens shape, just like dolphins and seals. They use this ability to hunt for fish, clam and shells to eat. – WTF Fun Facts

Source: https://www.bbc.com/future/article/20160229-the-sea-nomad-children-who-see-like-dolphins

WTF Fun Fact – Cat’s Eye Watch

by
WTF Fun Fact - Cat's Eye Watch

Ninja’s could tell time time by how dilated a cat’s pupils were as they dilate in a regular pattern throughout the day, regardless of ambient light. – WTF Fun Facts

Source: https://books.google.co.uk/books?id=kUHRAgAAQBAJ&pg=PT92&lpg=PT92&dq=ninja%27s+dilation+of+a+cats+pupils&source=bl&ots=nv1RKv7LED&sig=ACfU3U1vAb2RzmlG7Qlkfx3gkykZA0fLOg&hl=en&sa=X&ved=2ahUKEwjLmLydoJfpAhUlXhUIHc21CJoQ6AEwGnoECAwQAQ#v=onepage&q=ninja’s%20dilation%20of%20a%20cats%20pupils&f=false