Are small animals related to sea anemones?

Yes, small animals and sea anemones are related. They are both part of the same phylum, Cnidaria. Cnidarians are a group of invertebrate animals that have radial symmetry, a gastrovascular cavity, and stinging cells called nematocysts. Small animals, such as jellyfish and corals, are also part of this phylum. Sea anemones are classified as anthozoans, which is a class of Cnidaria that includes animals with a polyp body plan.