When writer Rebecca Giggs encountered a humpback whale stranded on her local beachfront in Australia, she began to wonder how the lives of whales shed light on the condition of our seas.

When writer Rebecca Giggs encountered a humpback whale stranded on her local beachfront in Australia, she began to wonder how the lives of whales shed light on the condition of our seas. Fathoms: The World in the Whale blends natural history, philosophy, and science to explore: How do whales experience ecological change? Will our connection to these storied animals be transformed by technology? What can observing whales teach us about the complexity, splendour, and fragility of life? In Fathoms, we learn about whales so rare they have never been named, whale songs that sweep across hemispheres in annual waves of popularity, and whales that have modified the chemical composition of our planet's atmosphere. We travel to Japan to board the ships that hunt whales and delve into the deepest seas to discover the plastic pollution now pervading the whale's undersea environment.