Malian workers cutting and drying up small sharks and rays on the edge of Nouadhibou Harbor. I was told the fins are sent to China for soup, and the meat is sold to Nigeria and Spain. The official annual catch in Mauritania is 900,000 tons, but reconstructed catch estimates are more than 2M tons.
For the past few decades, the small pelagic fishery has been migrating northward about 5° (300NM) every 10 years due to changing sea temperatures and increased fishing pressure.