* Euglena: A single-celled organism, the Euglena is a classic example. Its eyespot is a light-sensitive organelle that helps it move towards light sources for photosynthesis.

* Planaria: These flatworms also have eyespots, which are simpler structures than true eyes but can detect light and dark.

* Some Algae: Certain species of algae, like Volvox, possess eyespots to sense light for photosynthesis.

* Larvae: Some insect larvae, like caterpillars, have eyespots that are not for seeing but rather to confuse predators and make them appear larger.

It's important to note:

* Eyespots are NOT true eyes. They are simple structures that detect light but don't form images.

* Eyespots are found in diverse organisms: This shows how important light detection is for many life forms.

Let me know if you'd like to know more about a specific organism or aspect of eyespots!