Sea anemones are found from the intertidal zone to extreme depths. Some live attached to solid objects, others burrow in sand or construct tubes. They feed primarily on plankton.
Sea anemones feed through a mouth located in the center of its tentacles. Waste is regurgitated through the same opening. The tentacles sting zooplankton or fish that pass too close, and the anemone swallows its prey whole. Most anemones cannot sting humans with any noticeable effect.