The story for kids
This is a sea urchin, a spiky ball. It protects itself with its spines, and underneath it has a mouth with five teeth that it uses to nibble algae.
Facts
- Its spines protect it from fish.
- It moves on hundreds of tiny feet.
- Its mouth is underneath, and it nibbles algae with five teeth.
Numbers
- Size
- ~10 cm
- Eats
- Algae