In 1790, whalers from Nantucket are invited to found the port of Milford Haven in west Wales. But what does the arrival of these hardy Quakers mean for the local population? And what is the meaning of the beached whale that preceded them? As two cultures clash, concern swerves into hysteria against the incomers, and a local preacher plans a grotesque, Jonah-inspired fate for the whalers. Nathan Munday, a writer and trainee minister, talks to writer and broadcaster Horatio Clare about how his novel Whaling explores our relationship with nature, the boundary between faith and superstition, and the world of immigration.