In the five years leading up to 2014, 60 percent of Tanzania's elephants were slaughtered for their tusks.
Celebrities, politicians and protesters marched through Tanzania's biggest city, Dar es Salaam, on Saturday to protest against the ivory trade, which has decimated East Africa's elephants.
Hundreds of Chinese people also took part in the rally, furious that the demand for ivory in China is fuelling poaching.
In December, however, China announced a total ban of the trade and processing of ivory, to take effect by the end of 2017.
TRT World's Dan Ashby has more details.