Eteone longa (Fabricius, 1780)
Up to 160 mm for 350 chaetigers.
Living animals transparent yellowish white; eyes dark red. Preserved animals yellowish with three more or less distinct darker longitudinal lines dorsally, one median and two lateral. Dorsal and ventral cirri dark.
Muddy sand and mud.
Intertidal to at least 120 m.
Omnivore, predator, scavenger.
Breeding occurs from March to May. The eggs are deposited in a cocoon.
Arctic-boreal, both from the Atlantic and the Pacific. North Sea.