With every passing hour more and more of the heavy fuel oil on board the damaged Rena is removed.
Salvers say they've now pumped around 750 tonnes off the ship, which leaves around 600 tonnes still on board.
Good progress, but of course there's still enough to create a major environmental disaster if the ship were to break up and the remaining oil escaped.
But further up the coast, between Auckland and Whangarei, there's another shipwreck full of oil. Few people even know she exists, but with aging fuel tanks on the verge of collapse a major oil spill could happen at any time.
Tristram Clayton met the man who says out-of-sight mustn't mean out-of-mind.
Watch the video