Hydractinia longispina Fraser, 1938a

Distribution in South America: polyp—Pacific Ocean, Ecuador, at 0.26°S 91.37°W in Isla Isabela, at 1.23°S 90.45°W in Isla Floreana, Peru, at 6.95S 80.70W in Isla Lobos de Afuera (Fraser 1938a, 1938b, 1939, 1948; Calder et al. 2003).

Habitat: polyp—on sand and shell, from 15 to 33m depth (Fraser 1938a, 1938b; Calder et al. 2003).