I want to know the answer to the following question:
Ctenophora and the Cnidaria include what sea creatures?
All the background I'm provided with is that "Among the other phyla, the Ctenophora and the Cnidaria, which includes sea anemones, corals, and jellyfish, are radially symmetric and have digestive chambers with a single opening, which serves as both the mouth and the anus.". Is that enough to answer the question?