Fishing harpoons are dated from as early as 80k years ago from what is now in Zaire: http://en.wikipedia.org/wiki/Semliki_harpoon http://en.wikipedia.org/wiki/

Fishing harpoons are dated from as early as 80k years ago from what is now in Zaire: http://en.wikipedia.org/wiki/Semliki_harpoon http://en.wikipedia.org/wiki/Semliki_harpoon "With two boats, a strong net and a good knowledge of your local winds, it would probably be rather easy to net a tuna and use a land-bound wind to haul a good sized tuna to shallow waters where it could be hauled ashore by manpower." That seems unlikely. More likely they speared the sorts of fish they could carry in whatever sized craft they had (if any). From what I gather the bones are from smaller tuna.