Photo journal: Djibouti fisherman

Khat is good to have with friends, but I also use it when I go fishing at night, as it keeps you awake.

Khat is a stimulant that grows in Ethiopia and Kenya. You pick off the leaves, chew them, holding the leaves in your mouth for two or more hours.

The taste is bitter, and it makes you very thirsty, but you can work much harder. It stops you getting tired.

Photos and interview by Ed Harris