The Octopus Hunters of Zanzibar

Each day, as the tide begins to ebb and the beachgoers return to their hotels, a small army of men and women armed with sticks and spears wade out across the coastal flats in search of one of the Tanzanian island's finest delicacies - octopus.
Photographers Tommy Trenchard and Aurelie Marrier D'Unienville have captured them as they go about their work.

Tanzania is the largest producer of octopus in the western Indian Ocean
- Aurelie Marrier D'Unienville

Mariam, an octopus hunter from Bwejuu village, plunges into the water to

 cool off after a morning's work - Tommy Trenchard

A lone woman searches for octopus in the evening beyond a seaweed farm
at Bwejuu - Aurelie Marrier D'Unienville

More: BBC News