Why do some snakes have a blue spot or a blue eye?
When snakes shed their skin, it is called ‘Blue’ because there is often a blue spot or blue eye.
Snakes shed their skin as they grow larger. This is called ecdysis.
Snakes produce a mucous (sticky liquid) when they shed their skin, which helps separate the old skin from the new skin. The mucous often enters their eye scale, turning it blue.
