The discovery of ancient whale bone tools has been reported, with some outlets suggesting they may be the oldest known examples of whale harpoons. However, the location and age of the tools are unclear, with reports ranging from 5,000-year-old evidence in Brazil to 20,000-year-old tools in Spain. The findings appear to shed light on human and whale ecology, although the specifics of the discovery, including the exact age and origin of the tools, are not consistent across reports.