Black dogfish to the clade formed by the granular dogfish ("C. granulatum") and combtooth dogfish ("C. nigrum"). The black dogfish is a common species, with a wide but discontinuous distribution in the temperate waters of the Atlantic Ocean; its range abuts, but does not extend into, the Arctic Ocean. In the northeast, it occurs from Iceland to Sierra Leone, including the Faroe Islands, southern Norway, and the Rockall Trough and Porcupine Seabight off Ireland. In the northwest, it is found from southern Greenland and Baffin Island to Virginia, being particularly abundant in the Laurentian Channel, and may occur further south to the
Rockall Bank dispute Government declared that "The United Kingdom's fishery limits will need to be redefined based on St Kilda, since Rockall is not a valid base point for such limits under Article 121(3) of the Convention." This is the only example to date of a state voluntarily downgrading an insular feature to "a rock" and thus reducing the area of its claimed maritime zones. Rockall is within the Exclusive Economic Zone (EEZ) claimed by the United Kingdom. In 1997, the UK ratified the United Nations Convention on the Law of the Sea and thus relinquished any claim to an extension of its