Novelist Joseph Conrad described the sea as another planet. Majestic, dramatic and sometimes terrifying, the sea has held a real fascination for British writers. From Shakespeare to Coleridge, Robert Louis Stevenson to Patrick O'Brian, it has inspired some of our most gifted authors. Poet and novelist Owen Sheers sets off to discover whether there is anything that unites the great British sea stories. In the company of both seafarers and sea writers, he explores the transformative effect that the sea has had on the human mind.