Publication Date: 01 February 2026
RRP: $36.99
ISBN: 9781923451476
Format: Paperback
Size: 153mm x 234mm
Pages: 224pp (+ 8 page colour picture section)
Category: Environment, History, Science

Plotting the Oceans

Stories of Powerful Maps and Their Makers

Sarah Hamylton


‘By following geographer Sarah Hamylton on this enchanting voyage through time – via maps of atolls, reefs and spreading sea floors – a reader sees where longitude and latitude yield to insight and attitude.’ Dava Sobel, author of Longitude

‘This book opened my eyes wide to the power of maps and mapmakers to shape people’s views of the natural world. I’ve spent decades exploring the ocean, I’ve even helped make a few maps, and it never really occurred to me that there are no definitive maps of seascapes. Cartographers all have their own ways of seeing and knowing, and their own reasons for making maps. Sarah Hamylton expertly shows how maps reflect the many ways people study, understand, use, feel about and care for the ocean. Illuminating and erudite, Plotting the Oceans is required reading for map-lovers, nature-lovers, ocean-lovers and explorers of every kind.’ Helen Scales, author of What the Wild Sea Can Be

‘Sarah Hamylton deftly traces the work of those who dared to redraw the world’s edges and weaves their stories with her own fierce, meticulous mapping, showing us how every chart carries a reckoning with the world we are remaking and how our technologies, choices and imagination are reshaping the seas. Beautifully written and deeply felt, Plotting the Oceans uncovers the power, ambition and consequence of mapmakers, daring us to confront the political, ethical and environmental stakes behind every line we draw.’ Natalie Kyriacou OAM, author of Nature’s Last Dance

‘As well as offering us a vivid set of her own extensive cartographic adventures and scientific explorations, Sarah Hamylton brilliantly reveals the range and power of ocean map plotting, from Charles Darwin’s evolutionary discoveries of coral formation to Terry Hughes’ alarming exposures of today’s coral destruction on the Great Barrier Reef.’ Iain McCalman AO, author of The Reef

‘Plotting the Oceans is an illuminating investigation that traces how our knowledge of and stewardship over the world has evolved through the art and science of cartography. It will appeal to readers of science and nature writing, as well as anyone interested in the evolving relationship between humans and the planet.’ Books+Publishing


Five stories that demonstrate the history and power of maps – and the impact they have on our world

Charles Darwin mapped the world’s coral reefs to support a theory about how they formed, and in doing so developed insights that shaped his eventual theory of evolution. The trailblazing Marie Tharp, barred from ocean expeditions in the 1950s, nevertheless created the first detailed map of the ocean floor, providing key evidence for the then radical idea of continental drift. Maps have triggered territorial claims, saved giant tortoises and brought home the fragility of the Great Barrier Reef in the face of climate change.

Charting the course through these stories of discovery and disruption is Sarah Hamylton, herself an accomplished mapmaker who has travelled the globe and followed in the footsteps of cartographic giants. She explains what lies behind – and beyond – the maps we find in history books, scientific papers and contemporary news stories.

Riveting, illuminating and beautifully written, Plotting the Oceans answers critical questions about what the evolving nature of maps means for understanding our world, how it changes and how we’re changing it.


Listen to Sarah Hamylton’s interview on ABC Illawarra


Sarah Hamylton

Sarah Hamylton is an Associate Professor at the University of Wollongong, past President of the Australian Coral Reef Society and Director of the Spatial Analysis Laboratory. She has been sailing to, diving around and walking along shorelines to map coastal...

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