It is estimated that the Nantucketers and their Yankee whale-killing brethren harvested more than 225,000 sperm whales between 1804 and 1876. In 1837, the best year in the century for killing whales, 6,767 sperm whales were taken by American whalemen. (As a disturbing point of comparison, in 1964, the peak year of modern whaling, 29,255 sperm whales were killed.) Some researchers believe that by the 1860s whalemen may have reduced the world’s sperm-whale
