According to BRÖNNIMANN et al. (1989), A. pacifica occurs in artificial recruitment arrays placed in the vicinity of deep-sea (2600 m) hydrothermal springs in the East Pacific. Water temperature immediately surrounding the arrays was near ambient. Abyssotherma pacifica occurs also associated with Riftia pachyptila and on bare basalt, suggesting a wide range of temperature and sulfide tolerance (pers. comm. Bright).