Myxini, commonly known as hagfish, are a group of jawless fish belonging to the class Myxini. They are primarily found in deep-sea environments and are known for their unique, elongated bodies and slimy skin. Hagfish have a cartilaginous structure instead of bones and possess a simple anatomy, including a notochord that provides support. These creatures are scavengers, feeding on dead or dying marine animals. They have a remarkable ability to produce large amounts of mucus, which helps them evade predators. Myxini play an important role in the ocean ecosystem by recycling nutrients and contributing to the health of marine habitats.