An earthworm does not have real eyes to look around with, but it can still sense light!
Because an earthworm lives deep in the dark soil, it doesn’t need eyes to see colors or shapes. But it still needs to know when it is a safe night and when it is a hot day.
- The worm’s skin, especially at its front end, has special cells that can feel light.
- When a worm feels bright sunshine, it knows it must quickly dig back underground so it doesn’t dry out in the sun.
- It can also feel the ground shaking, which helps it escape from hungry birds!
This teaches us that there are many different ways to sense the world. Even though an earthworm is completely blind, it uses its skin to know exactly where it is safe and dark.
The next time you meet an earthworm on the sidewalk after the rain, don’t wonder why it isn’t looking back at you. It definitely knows you are there! πͺ±π