For most of human history, the sea has been both a road and a riddle. It promises fortune and freedom — but it also swallows ships whole. And in the eighteenth and nineteenth centuries, as Britain’s empire spread across the globe, the sea became seen, not just as a physical frontier, but as a psychic one  — a vast, perilous deep where faith, science, fear, and fantasy collided.

This is the story the British cultural historian Karl Bell tells in The Perilous Deep: A Supernatural History of the Atlantic, his epic study of sailors’ lore, ghost ships, sea monsters, superstitions, omens and uncanny maritime experiences.

We hear about 'the caul' - the protective embryo of an unborn baby said to keep sailors safe, the 'jonah', a scapegoat eyed suspiciously by those on board as responsible for the ship's misfortunes, H P Lovecraft, cross-dressing pirates and  more.

This is not a history of battles or trade routes, but of dreams, fantasies and terrors — of the sea as it existed in the minds of those who sailed upon it

The Perlious Deep: A Supernatural History of the Atlantic