The longnose spurdog (Squalus blainville) is a dogfish shark of the genus Squalus, found over continental shelves in all oceans, at depths of between 15 and 800 metres.
The longnose spurdog (Squalus blainville) is a type of dogfish shark belonging to the genus Squalus, inhabiting continental shelves in all oceans at depths ranging from 15 to 800 meters.