( s well as local subsistence fishers. De...)Study warns deep-sea mining may pose serious threat to fragile marine ecosystems

s well as local subsistence fishers. Depending on ocean currents, these nutrients could drift widely, disrupting the food chain and potentially damaging ecosystems that lie within other countries?economic zones or in international waters. This poses additional problems, because while a state has the right to exploit its own resources, international environmental law decrees that it cannot damage the environment beyond its boundaries.

While studies of proposed undersea manganese mining in the equatorial region of the Pacific found the risks to outweigh the benefits, says Halfar, there have been no independent impact assessment studies of the proposed massive sulphide mining sites. "Over 250 active and fossil deposits have already been found. And the company operating in Papua New Guinea has already staked claims off the coast of Tonga and Fiji," he says. "If this first attempt at mining proves successful, it’s like letting the genie out of the bottle."
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Source:University of Toronto

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