Which cnidarians are attached?

Answer 1

Attached cnidarians primarily include sessile forms such as corals and sea anemones. These organisms typically anchor themselves to substrates like rocks or the ocean floor using structures like a pedal disc or a base. Corals, often forming large reefs, are particularly significant as they contribute to marine biodiversity and habitat structures. Sea anemones can also attach to surfaces but may have the ability to move slowly if needed.