vessel. >> he was in a canoe with a dutch anthropologist. they were trying to go by land and river. rockefeller wanted to try to swim ashore and he wanted to have a go. that was the last he saw of michael rockefeller. >> jesse: the theory has been that rockefeller was eaten not by sharks but by cannibals to this day historians believe this photo of a white man running with a cannibal tribe may have been michael rockefeller. last year primetime spoke to a rockefeller investigator who paid a visit to the tribe of cannibals. >> according to culture, carried a sacred obligation to reciprocate to kill somebody from the tribes that had killed their people and michael rockefeller unfortunately swam