Will selective harvesting still damage fragile deep-sea habitats?

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Selective Harvesting Poses Risks to Fragile Deep-Sea Habitats

While Impossible Metals aims to minimise ecological disruption through selective harvesting of poly-metallic nodules, the method still carries risks of damaging fragile deep-sea ecosystems. The company's robotic technology uses lights, cameras, and artificial intelligence to identify and collect nodules containing valuable metals like nickel, copper, and cobalt, while intending to leave aquatic life undisturbed. However, experts caution that even a selective approach can destroy habitats, and the full impact remains difficult to assess due to limited knowledge of deep-sea biodiversity.
Selective Harvesting Technology Aims for Reduced Disruption

Impossible Metals has developed a robot designed to identify and collect poly-metallic nodules with greater precision than conventional methods. Unlike competitors that employ large machines described as "a bit like bulldozers" which scoop up vast amounts of seabed material and create sediment plumes, Impossible Metals' prototype hovers over the lake bottom and uses AI to select nodules. The company claims this selective approach reduces the risk of environmental damage by avoiding the widespread disturbance associated with bulk harvesting.
Habitat Destruction Remains a Concern

Despite the more targeted approach, removing the poly-metallic nodules themselves inherently destroys the habitat they provide for marine organisms. Impossible Metals acknowledges that its technology cannot detect microscopic life, though it asserts a policy of leaving 60% of nodules untouched. Marine biologists highlight that deep-ocean ecosystems are particularly fragile, with life forms that grow and reproduce very slowly, making them highly sensitive to disturbance.
Knowledge Gaps Hinder Impact Assessment

Assessing the precise impact of deep-sea harvesting, even with selective methods, is challenging due to significant gaps in scientific understanding. Experts note that the vast majority of ocean species, estimated at two million, remain undiscovered, with only about 250,000 currently known. This lack of comprehensive knowledge about deep-sea biodiversity and the intricate functioning of these ecosystems makes it difficult to predict or quantify the long-term consequences of any form of seabed harvesting.

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Will selective harvesting still damage fragile deep-sea habitats?

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