Geographical range: temperate regions in both hemispheres
Environment: marine waters
Reproductive guild: nonguarders
Largest species: Eptatretus goliath (1275 mm / roughly 50 inches)
Smallest species: Myxine pequenoi (183 mm / roughly 7 ¼ inches) and Myxine kuoi (187 mm / roughly 7 ¼ inches