Sea Slugs Are The Only Known Animals That Can Photosynthesize
Photosynthesis is the process by which plants can capture sunlight and convert it into energy. Furthermore, sea slugs are the only animals that scientists know can also photosynthesize sunlight into energy.
Sea slugs can use the chloroplasts – the parts of the plant cells that perform photosynthesis – from the algae that they eat. However, even more astonishing, they have taken the genetic code from the algae that enable them to produce their own chloroplasts! So basically, sea slugs are a plant and an animal, all in one.