One day, however, deep-sea mining will surely start to look commercially attractive again. At present China and Russia are the two countries most interested in massive sulphides, followed by India and South Korea. Russia, which has been grubbing around on the seabed for years, knows exactly what it wants and where: it has found four massive-sulphide deposits of over 10m tonnes each in the past four years, all on the Mid-Atlantic Ridge. China is less sure of what it is after, but has become interested in the southern Indian Ocean, as well as the zone in the North Pacific where most of the manganese-nodule licences have been granted. While China makes up its mind, it is blocking all decision-making at the International Seabed Authority, which was due to issue legal, environmental and revenue-sharing regulations about mining in international waters this month but is unlikely to do so. Fortunately, no miners are in a hurry to get started—and massive sulphides, unlike huge rock stars, can wait.