How realistic are the vengeful whales of “Moby-Dick” and “In the Heart of the Sea,” really? - Quartz : Gentle giants—or monsters of the deep? (Flickr user Biodiversity Heritage Library (licensed under CC-BY-2.0; image has been cropped)) "Mess with a sperm whale, get an 80-ton torpedo—one that will sink a ship and, like a giant mammalian Jaws, stalk the surviving crew across the ocean. That, at least, is the plot of Ron Howard’s cinematic rendering of In The Heart of the Sea. Based on the 2000 book by Nathaniel Philbrick, it’s a loose retelling of the 1821 sinking of the whaleship Essex, after an enormous sperm whale bashed in its hull with its head. The story eventually helped inspire Herman Melville’s 1851 novel, Moby-Dick, which describes a whaleship captain’s self-destructive obsession with hunting down the white sperm whale that sank a previous ship and severed his leg. In the movie version of In the Heart of the Sea, the sperm whale goes beyond the historical account...