100 Things: #29
Cone cells are cells in the eye that allow someone to detect colors. Humans have three types -- one for red, blue, and green -- that allow us to see millions of colors. Adding a fourth doesn't just add one color -- it would add the ability to detect thousands more.
With that in mind, the following I find fascinating:
- Dogs have two types of cone cells
- Humans have three types of cone cells
- Butterflies have five types of cone cells
- Mantis shrimp have sixteen types of cone cells.
In fact, the eye of the mantis shrimp has the most complex eye in the world. Nothing else in nature comes within 50% of the complexity that has been observed in a mantis shrimp eye.
With that in mind, the following I find fascinating:
- Dogs have two types of cone cells
- Humans have three types of cone cells
- Butterflies have five types of cone cells
- Mantis shrimp have sixteen types of cone cells.
In fact, the eye of the mantis shrimp has the most complex eye in the world. Nothing else in nature comes within 50% of the complexity that has been observed in a mantis shrimp eye.