👉 Systellomatophora are a group of marine invertebrate animals that primarily live on the surface of the ocean, often forming colonies and living in groups called "mammal colonies." They possess a complex array of structures and systems, including a centralized nervous system, specialized organs for gas exchange (such as gills), and an exoskeleton. Systellomatophora are known for their ability to form large, interconnected colonies that can cover large areas of the ocean
