Deep-sea mining threatens midwater ecosystems significantly

Deep-sea mining is becoming a major concern for marine life, particularly in the midwater zone of the ocean. This unique ecosystem, which lies 650 feet below the surface, supports various species, including important fish like tuna and many delicate creatures. As demand for metals used in technologies like electric car batteries rises, companies are eyeing the ocean floor for resources. They aim to extract polymetallic nodules filled with valuable metals. However, this extraction process could harm not just the seafloor but also the midwater ecosystem above it. Current deep-sea mining operations could release sediment plumes that disrupt feeding, alter animal behavior, and affect food webs. The International Seabed Authority is set to discuss regulations and guidelines for future mining, but the potential impacts on marine ecosystems remain uncertain. Further research is essential to understand the consequences of deep-sea mining. Much of the deep ocean is still unexplored, and many species are unknown to science. Decisions made in July 2025 could shape the future of this critical marine environment.