For over 25 years, Harris has promoted billfish conservation and advocated for other game fish species through education and data collection as the Director of the African Billfish Foundation (ABF) in Kenya. Through Harris' efforts with the ABF, catch and release practices and billfish tagging has become more prevalent in East Africa. 

To date, the ABF has recorded over 62,000 tagged fish with nearly 4,000 tag recoveries, resulting in one of the most comprehensive recreational billfish databases in the Indian Ocean. Harris also mentors young Kenyans and provides funding for the next generation of billfish scientists.