Diadumene lineata, the orange-striped green sea anemone, has several morphotypes which have been described multiple times.

The column, which houses the gastro vascular central cavity extends from the mouth to the attached base called the pedal disc.

[3][4] Population studies exhibiting morphs of several different communities were done along with personal communication from the following individuals (Parker 1919, Allee 1923, Stephenson 1935).

These population studies were done in Indian Field Creek, Virginia and Barnstable Town Dock, Massachusetts by C.P.

Williams), Western Europe,[6] the Mediterranean Sea, the Suez Canal, Malaysia (D. F. Dunn, California Academy of Sciences), and on the east and west coasts of North America (L. L. Minasian, Myers 1977, Stephenson 1935, Sassaman and Mangum 1970, Shick, J. H. Ting 1983, Uchida 1932, G. M. Watson, W. E. Zamer 1999).

Appearing suddenly, populations quickly proliferate and colonize zones and alter natural balances.

Diadumene anemones display high tolerance to inter-tidal exposure and drying out in extreme summer heat.

In Blue Hill Flls, Maine 100 percent survival of a population of 4000 individuals was observed after two weeks of temperatures of 1.0°- 27.5 °C, and salinities of 0.5 - 35‰.

[10] Physiological races, which are eurytolerant (tolerant of extreme environments) diverse species, that exhibit different resistances in remote and secluded places.