Do aliens really exist on Earth?
Yes, these pictures of Sea Slugs prove aliens already live on Planet Earth.
Sea Sheep also known as Costasiella Kuroshimae
Blue Angel also known as Glaucus Atlanticus
Sea Bunny also known as Acanthodoris Pilosa
Lettuce Sea Slug also known as Elysia Crispata
Trinchesia Yamasui Hamatani
Do you know any other animals living on Earth that look like aliens?