BusinessThe seaweed farmers of Zanzibar02:10This browser does not support the video element.Business05/17/2017May 17, 2017Zanzibar produces 10 thousand tonnes of seaweed every year. It's exported to China, Korea, the US and the EU, where it's processed. But the harvet has been shrinking in recent years. That's forced many of the seaweed farmers out of business. Copy linkAdvertisement