When most people think about Earth’s surface, they imagine land rising above the ocean. However, several remarkable places around the world lie below sea level, meaning their elevation is lower than the average level of the world’s oceans. These unique landscapes were formed through a combination of tectonic activity, erosion, evaporation, and human engineering. Despite their unusual elevations, many of these regions support thriving ecosystems, agriculture, tourism, and even permanent communities.
One of the best-known places below sea level is the Dead Sea, located between Jordan and Israel and the West Bank. Its shoreline sits more than 430 meters (1,410 feet) below sea level, making it the lowest exposed land on Earth. Because the lake has no outlet, water evaporates quickly, leaving behind extremely high concentrations of salt. This high salinity allows people to float effortlessly and supports only specialized microorganisms rather than fish or aquatic plants.
Another famous example is Death Valley in California, home to Badwater Basin, the lowest point in North America at approximately 86 meters (282 feet) below sea level. Death Valley formed as the Earth’s crust stretched and dropped along fault lines. The region experiences some of the hottest temperatures ever recorded and receives very little rainfall. Salt flats cover much of the basin, creating a striking white landscape against the surrounding mountains.
The Danakil Depression in Ethiopia is another extraordinary below-sea-level region. Formed where tectonic plates are slowly pulling apart, it contains colorful mineral deposits, active volcanic areas, hot springs, and salt flats. Extreme heat and geothermal activity make it one of the harshest environments on the planet, yet it remains an important site for geological research.
Not all below-sea-level regions are natural. Large parts of the Netherlands lie below sea level because of centuries of land reclamation. Through the construction of dikes, canals, pumps, and polders, the Dutch have successfully protected communities and farmland from flooding. Today, millions of people live safely in these engineered landscapes, demonstrating how technology and careful planning can overcome challenging geography.
Areas below sea level often face unique environmental concerns. Rising sea levels caused by climate change increase the risk of flooding in low-lying regions, particularly those protected by levees and dikes. In inland basins such as the Dead Sea, declining water levels caused by reduced river inflow and evaporation continue to reshape the landscape. Scientists closely monitor these areas to better understand how natural processes and human activities affect them.
From the salt-covered plains of Death Valley to the floating waters of the Dead Sea and the engineered polders of the Netherlands, below-sea-level landscapes showcase Earth’s incredible geological diversity. These remarkable regions remind us that elevation alone does not determine whether a place can support life, attract visitors, or play an important role in understanding our dynamic planet.