It is an exhausting and perilous journey which Juan Medina, a photographer based in the Canaries, has been documenting since 1999.

• 英国独立报派遣记者前往采访的当周，在毛列塔尼亚首都奴卡卓特（Nouakchott）附近海岸工作的渔夫发现两具残缺不全的尸体，漂浮在海上，随著海浪上下游移著。