Interesting website that tells the story of the other slave trade. African taken as slaves to South Asia, Persian Gulf, Arabian Peninsula, East Africa and other areas like Turkey, China, Japan, Indonesia, Palestine and Israel.
There are photos and drawings with bits of history attached to each and multimedia videos.
There seem to be no exact number of Africans taken in the Indian Ocean Slave Trade... with this slave trade and the Atlantic Slave Trade, you wonder if they left anyone in Africa!