Actually, it turns out that mantis shrimp see less colors than humans. They have 16 kinds of light detectors in their eyes, but their brains are so simple that they can’t mix colors, so while a human can see millions of colors with 2 kinds, the shrimp can see 16.
Actually, it turns out that mantis shrimp see less colors than humans. They have 16 kinds of light detectors in their eyes, but their brains are so simple that they can’t mix colors, so while a human can see millions of colors with 2 kinds, the shrimp can see 16.
Humans have 4 kinds.