How is the digestive system of a cnidarian different from a human?

Cnidarians, such as jellyfish and sea anemones, have a simple digestive system with a single opening that serves as both mouth and anus, leading to a central gastrovascular cavity where digestion occurs. In contrast, humans possess a more complex digestive system with a separate mouth and anus, involving a long, tubular gastrointestinal tract that facilitates specialized processes for digestion and nutrient absorption. Additionally, cnidarians primarily rely on extracellular digestion in their gastrovascular cavity, while humans utilize both mechanical and chemical digestion throughout their digestive tract.