The comparison to a WW2 tank in the Black Forest isn't great though, because the environments live on different timescales.

A forest can regrow and thrive after a few decades. The same is _not_ true for the deep sea[1].

'Life on the ocean floor moves at a glacial pace. Sediment accumulates at a rate of 1 millimeter every millennium. With such a slow rate of growth, areas disturbed by deep-sea mining would be unlikely to recover on a reasonable timescale.'

[1]: https://news.mit.edu/2019/understanding-impact-deep-sea-mini...