1) Island of Mauritania 
Tidra is an offshore island 18 miles long and 5 miles wide. Roughly the size of Manhattan (13.4 miles (21.6 km) long and 2.3 miles (3.7 km) wide). It is the largest island off the shore of Banc d` Arguin, Mauritania and is home to a community of Imraguen fishing tribe. The island is part of the Banc d`Arguin National Park. ...