Deep Hypersaline Anoxic Basins Deep Hypersaline Anoxic Basins, or DHABs, are lakes of ultra-salty, no-oxygen water more than a mile below the surface of the ocean. They are some of the most extreme environments on Earth—and yet, life thrives there. DHABs are home to complex communities of microbes that have adapted to their hostile habitat and contribute to the global cycles of carbon, nitrogen, and other key elements. Explore DHABs DEEPER DISCOVERY What are DHABs? DEEPER DISCOVERY The Halocline DEEPER DISCOVERY The Geology of DHABs DEEPER DISCOVERY Life at DHABs Scientists Explain DHABS Dr. Ginny Edgcomb explains the halocline. Dr. Joan Bernhard discusses symbiosis. Dr. Joan Bernhard on Loriciferans.