Bowhead whales are considered to be the longest-living mammals, living for over 200 years.[42][18] In May 2007, a 15 m (49 ft) specimen caught off the Alaskan coast was discovered with the 89 mm (3.5 in) head of an explosive bomb lance of a model manufactured between 1879 and 1885 lodged in its body,

James Cameron did his homework.