Eirene sp.

Distribution in South America: polyp—Atlantic Ocean, Brazil, at 23.85°S 45.42°W (Spiritus & Migotto 2008, abstract);

medusa—Atlantic Ocean, Brazil, from 26°S to 26.5°S, and at 27.84°S 46.91°W (Correia 1983; Nogueira Jr. 2012; Nogueira Jr. et al. 2015a).

Habitat: polyp—interstitial, loosely attached to sand grains (Spiritus & Migotto 2008).