Holly and some co-authors have just written an article for the World Economic Forum, highlight how difficult it might be to manage the environmental impacts from Deep Sea Mining. A key point  is that biodiversity offsetting, where damage in one place is made up for by doing good or preserving biodiversity elsewhere, really isn’t a viable option in the deep sea. So unless we can avoid doing damage in the first place (which seems irreconcilable with most of the methods proposed for extracting minerals from the seabed), lasting environmental damage may be unavoidable if/when we begin to mine in the deep sea.

Well worth  a read!