I want to know the answer to the following question:
What was spilled when the freighter ran aground?
All the background I'm provided with is that "On 16 March 2011, the freighter MS Oliva ran aground on Nightingale Island, spilling tons of heavy fuel oil into the ocean, leaving an oil slick threatening the island's population of rockhopper penguins.". Is that enough to answer the question?
Answer: yes