 Upwellings off the coats create rich feeding grounds for baleen whales and these include blue whale, sei whale and Bryde's whale, although the North Atlantic right whale is now extinct in the eastern Atlantic and it was recorded off Mauretania.Other whales and dolphins found off Mauritania's coast include harbour porpoise, Atlantic spotted dolphin, bottle-nosed dolphin, sperm whale, short-finned pilot whale and orca.Over 500 species of bird have been recorded in Mauritania.