Sharks on the Move

The sharks have not vanished. They have moved — and the map you grew up with no longer matches the water. Tiger sharks now reach the waters off New England weeks earlier and hundreds of kilometres farther north than they did a generation ago. Young white sharks are growing up in Monterey Bay, where the water used to be too cold. Bull sharks are lingering off Sydney a little longer every summer, and pupping in a North Carolina sound where they were once rare visitors. None of this is rumour. Each move was measured — by satellite tags, by forty years of cooperative tagging records, by fifteen years of listening stations — and each one is a reading on the largest instrument we have: the ocean itself. Sharks on the Move follows the documented journeys species by species and coast by coast, explains the simple machinery underneath (temperature, currents, prey, nurseries), and asks the question every coastal reader is really asking: what does this mean for my beach, my boat, my town? Inside you'll discover: The tiger shark file: how each degree of warming moved a migration roughly 400 kilometres north — and out from behind its own legal protection Why the young decide the map: nurseries switching on in Pamlico Sound, gaining ground in Chesapeake Bay, and shifting up the California coast The prey that moved first — and why predators are usually just the last to arrive in a rearrangement that started with fish An honest chapter on risk: what the numbers actually say, and why more sightings does not simply mean more danger How you protect an animal that will not stay inside the fence: dynamic management, shark corridors, and the new science of tracking a moving target A closing field guide to reading your own coast — temperature, seasons, baitfish, and the local science worth following Who this book is for: Swimmers, surfers, anglers, divers, and beach-town locals who want the real story behind the headlines; shark lovers who are tired of both monster stories and vague doom; and any reader who wants to understand climate change through one vivid, measurable change already under way. Sylvia Corrigan writes about the meeting point of wildlife and a changing climate, turning peer-reviewed tracking science into stories any coastal reader can use. The map of the sea is being redrawn in our lifetimes. This is your guide to reading the new one.