At hot vents only. The life habit of the adult is semiepibiotic on bare basalt, living in cracks and crevices from which hydrothermal fluids emanate; early life history stages are often encountered living within basaltic rubble associated with such warm cracks and crevices. The presence of this species is correlated with elevated levels of hydrogen sulphide. The soft tissue is coloured dark red when retrieved living due to the presence of intracellular hemoglobin. The thick and large gills contain sulfur oxidizing chemoautotrophic symbionts. The large rugose foot is often seen protruding when the clams are viewed in life position.