Halopteris polymorpha (Billard, 1913)

Distribution in South America: polyp—Atlantic Ocean, Brazil, at 3.93°S 32.42°W, from 21°S to 27.22°S (Schuchert 1997; Migotto et al. 2002; Grohmann et al. 2003; Oliveira et al. 2006; Oliveira & Marques 2007; Shimabukuro 2007; Amaral et al. 2009; Silveira & Morandini 2011; Miranda et al. 2015).

Habitat: polyp—on algae and rocks (Schuchert 1997; Oliveira 2006; Oliveira & Marques 2007; Shimabukuro 2007).