But as there's no way to prevent sediment from polluting large areas of the sea, the depth at which mining occurs is irrelevant. And companies will mine at what

But as there's no way to prevent sediment from polluting large areas of the sea, the depth at which mining occurs is irrelevant. And companies will mine at whatever depths make money. Still, it's nice to just dismiss it as hyperbole instead of thinking we need to take serious action to prevent further damage to our planet.