News Oceans Deep-sea mining may damage underwater ecosystems for decades Microbes disturbed by a seafloor experiment 26 years ago still haven’t recovered Sediment samples, collected by a remotely operated vehicle off the coast of Peru (shown), reveal that seafloor microbe communities still haven’t recovered from an experiment 26 years ago that mimicked deep-sea mining. GEOMAR, ROV Kiel 6000 Share this:EmailFacebookTwitterPinterestPocketRedditPrint By Carolyn Gramling May 4, 2020 at 6:00 am Microbe communities living in the seafloor off Peru haven’t bounced back from a deep-sea mining experiment 26 years ago.