Plumularia insignis

Distribution in South America: polyp — Atlantic Ocean, Uruguay to Argentina, from 35 ° S to 43.55 ° S (Blanco 1994 a, 1994 b; Genzano 1995; Zamponi et al. 1998; Genzano & Zamponi 2003; Genzano et al. 2009 a; Miranda et al. 2015). Stepanjants (1979) reported this species from the Patagonian coast with no specific location. Habitat: polyp — it is a ‘ rooting’ species which settles initially on pebbles or shell debris on soft bottom, grows in size, and then stays erect by an anchoring system (Genzano et al. 2009 a), from 100 to 680 m depth (Stepanjants 1979; Blanco 1994 a, 1994 b; Genzano 1995; Zamponi et al. 1998; Genzano & Zamponi 2003; Genzano et al. 2009 a).