Claim: Bay of Arguin (or Baie d'Arguin in French), measuring 13 km (8.1 mi) long and 20 km (twelve mi) wide, is a bay on the Atlantic shore of Mauritania and located south of Cap Blanc.
Evidence: The Bay of Arguin (French: Baie d'Arguin; Portuguese: Baía de Arguim) is a bay on the Atlantic shore of Mauritania. 13 km (8.1 mi) 20 km (12 mi) It is located south of Cap Blanc, north of Cap Timiris.