Seashells are the sculpted homes of a remarkable group of animals: the molluscs. These are some of the most ancient and successful animals on the planet. But watch out. Some molluscs can kill you if you eat them. Some will kill you if you stand too close. That hasn't stopped people using shells in many ways over thousands of years. They became the first jewelry and oldest currencies; they've been used as potent symbols of sex and death, prestige and war, not to mention a nutritious (and tasty) source of food. Spirals in Time is an exuberant aquatic romp, revealing amazing tales of these undersea marvels. Helen Scales leads us on a journey into their realm, as she goes in search of everything from snails that `fly' underwater on tiny wings to octopuses accused of stealing shells and giant mussels with golden beards that were supposedly the source of Jason's golden fleece, and learns how shells have been exchanged for human lives, tapped for mind-bending drugs and inspired advances in medical technology. Weaving through these stories are the remarkable animals that build them, creatures with fascinating tales to tell, a myriad of spiralling shells following just a few simple rules of mathematics and evolution. Shells are also bellwethers of our impact on the natural world. Some species have been overfished, others poisoned by polluted seas; perhaps most worryingly of all, molluscs are expected to fall victim to ocean acidification, a side-effect of climate change that may soon cause shells to simply melt away. But rather than dwelling on what we risk losing, Spirals in Time urges you to ponder how seashells can reconnect us with nature, and heal the rift between ourselves and the living world.

Author Biography

Helen Scales is a marine biologist based in Cambridge. Her doctorate involved exploring the reproductive biology of the humphead wrasse, and since then she has tagged sharks in California, catalogued marine life surrounding a hundred islands in the Andaman Sea, and most recently studied the diverse fish that live on coral reefs in the South Pacific. Helen is now a freelance researcher and broadcaster. A major outlet for Helen's explorations is BBC Radio where she is a reporter and presenter on science and natural history programmes, especially on Radio 4 and the World Service. Her credits include regular appearances on Inside Science and Home Planet, numerous one-off documentaries, and a coveted spot on The Museum of Curiosity. Helen is also a long-standing member of the award-winning science communication collective, The Naked Scientists, based at the University of Cambridge. Helen's first book was Poseidon's Steed; The Story of Seahorses from Myth to Reality, (2010, Penguin).