In 1819, the American whaler Essex was sailing deep into the great equatorial hunting grounds of the Pacific when it was destroyed by a maddened sperm whale. By all reports, the 85-foot whale deliberately rammed the ship twice and sank it. The incident, which occurred in the same year that Herman Melville was born, became a primary source of inspiration for Moby-Dick. Indeed, much of the detail and color in the final chapter of Melville's work is drawn directly from these three eyewitness accounts. The book also served as the basis for the 2015 movie In the Heart of the Sea, directed by Ron Howard and starring Chris Hemsworth.