What To Look For:
A uniformly dark dogfish with two dorsal fins,
each with a spine on the leading edge. It
schools in large numbers on the edge of
continental shelves at depths of between 200
and 1600 m, where temperatures range from 1-4
degrees Celcius. In winter months it has been
recorded nearer the surface.
Up to 1 m.
Mainly northern Atlantic, but some records from
the south-east of Africa.