By A Mystery Man Writer
Triggered by the colder temperatures of deep water, the mutation activates visual pigments that sense blue light, the only color that reaches such depths.
Tag - The Japan Times
The seal shark Dalatias licha (a–c) and the wreckfish Polyprion
Whale shark - Wikipedia
More Japan Articles - The Japan Times
Tag - The Japan Times
Do Whale Sharks Have Bad Eyesight? 'Finding Dory's Destiny Can't
Why Is It Hard To Monitor Whale Sharks? - Faunalytics
What scientists learned about whale sharks from the DNA they left
Tag - The Japan Times
Cold War nuclear bomb tests reveal true age of whale sharks - Scimex
Whale Sharks & Night Blindness in People
Whale shark - Wikiwand
Why does a shark have teeth on its eyeballs? - Quora
Whale sharks see in dark due to mutation behind blindness in humans