The long-finned worm eel or short-headed worm eel, Scolecenchelys breviceps, is a snake eel of the genus Scolecenchelys, found in southern Australia between Rottnest Island and Tasmania, and around New Zealand, to depths of about 50 m, on sandy or muddy bottoms.
In the marine ecosystem, the deep-sea worm eel with long fins, Scolecenchelys breviceps, is a species that inhabits the waters off southern Australia and New Zealand, specifically between Rottnest Island and Tasmania, at depths of approximately 50 meters, where it dwells on sandy or muddy substrates.