[1] Peachia quinquecapitata lives with its elongated column buried in the sand and its twelve tentacles fanned out on the surface.

[2] Peachia quinquecapitata is found in shallow seas in the Pacific Northwest of the United States including Puget Sound.

Some of the larvae were ingested by the medusa, Phialidium gregarium (now classified as Clytia gregaria), and only they continued to develop in the laboratory setting.

[2] At first they fed on food particles in the gastrovascular cavity of the jellyfish but after 11 days they developed parasitic habits and began to feed on their hosts' gonads, moving on later to other tissues.

[2] This parasitism is likely to be harmful to the host but of advantage to the anemone in that its larvae can develop safely in a protective environment and passively disperse to new localities.