The Lost World of Aquaterra

Aquaterra is the vast coastal zone repeatedly exposed and submerged as ice ages lower and raise sea levels. Geographer Jerome Dobson estimates that it spans more than 6.6 million square miles - an area comparable to South America - and includes both today’s coastal lowlands and the seabed that was once dry land. The argument is that this largely unmapped terrain may hold a missing record of human history. As modern humans spread out of Africa at least 70,000 years ago, sea levels were already far below today’s, and people lived, traveled, and developed societies across landscapes now underwater. These shores may have supported settlements and cultural innovations long before the familiar civilizations of Mesopotamia and Egypt.

Underwater discoveries show that the lost record is beginning to emerge. Finds include ancient hand axes off South Africa, Neanderthal artifacts beneath the North Sea, and early hominin fossils from Indonesia. More recent sites include decorated Cosquer Cave, whose entrance lies 120 feet below sea level; the half-mile-long Blinkerwall, apparently used to funnel reindeer; and Bouldnor Cliff, where divers found stone tools, worked wood, food traces, and Britain’s oldest known string. Artifacts also turn up in fishing gear and dredged sand, while systematic research remains difficult: divers face limited working time, cold water, currents, poor visibility, and specialized equipment needs. The evidence supports a broad call to map and investigate submerged landscapes before their archaeological significance is overlooked.