Glaucus atlanticus belongs to the order Nudibranchia and is known as the blue dragon, the blue sea slug, the blue angel, or the sea swallow. It has some interesting features and behavior, even compared to other sea slugs. It's a small animal that may reach a little over an inch long. Despite its size, it has some impressive abilities. In addition to the blue color, one of the first things that a viewer would notice would probably be the extensions from the animal's body. Each appendage on the body branches into cerata. The cerata are located on the side of the animal instead of on its back. They contain venom and can sting. The animal doesn't produce its venom. It captures nematocysts from jellyfish and uses them itself. As the floating sea slug is transported by wind and water currents, it feeds on creatures that it encounters and stores their nematocysts.