They are called Harragas - from Arabic, "those who burn" (the frontier) - and they are migrants, mainly from Sub-Saharan Countries, who attempt to illegally immigrate to Europe.
On the northern shoreline of Morocco, from the medina of Tangier to the jungle of Oujda, Harragas hope to cross the Strait of Gibraltar in order to reach Spain: thousands of them live in a limbo with no means to return home, nor to tempt fate and pay a clandestine jump to Andalusia, ousted by the police, disregarded by the institutions and exploited by the locals.