ZANZBAR, March 7 -- AT low tide along Zanzibars coastline, women wade slowly into the warm waters of the Indian Ocean, tying delicate strands of seaweed to lines stretched between wooden stakes.

 For many families in the islands, this quiet, labour-intensive work is more than a livelihood—it is the backbone of household survival.

For years, however, many of these women struggled with low yields, unstable markets and limited access to training or equipment.

 It was during visits to communities like these that Mariam Mwinyi, the First Lady of Zanzibar, began to see how small interventions could dramatically change lives.

Today, those experiences have grown into a broader mission through the Zanzibar Maisha Bora Foundatio...