Scientists found over 200,000 barrels of leaking radioactive waste

Key Points:

• Scientists directly observed heavily corroded barrels of radioactive waste on the seafloor nearly three miles deep in the Northeast Atlantic, with some material leaking into the surrounding environment.
• Instruments detected radionuclides associated with the waste, such as cobalt-60 and niobium-94, at levels above normal background, though distinguishing these from other sources like nuclear tests remains challenging.
• Over 200,000 barrels were dumped in this area during the mid-to-late 20th century, with historical disposal expecting gradual release of radioactive contents rather than permanent containment.
• Deep-sea organisms including anemones, sponges, and crabs have colonized the barrels, raising concerns about potential uptake of radionuclides by marine life, which is still under investigation.
• The research, conducted during 20 submersible dives in 2026 and building on prior mapping efforts, provides new close-up data but does not yet allow definitive conclusions about ecological risks or the full extent of contamination.