👉 Polychaetes are a group of marine invertebrates that include jellyfish, starfish, and sea anemones. They have a complex network of cells called a chytrid, which is composed of multiple trilobites or chitin chains. These trilobites are surrounded by a protein-rich matrix known as the chitin matrix, which helps to protect them from being eaten by predators. Polychaetes are typically found in saltwater habitats and can be found