Mauritian Wildlife Foundation

A Japanese ship that ran aground on a reef off Mauritius two weeks ago has now stopped leaking oil into the Indian Ocean, but the island nation is preparing for "a worst-case scenario", with several cracks seen in the tanker's hull.

The Japanese operator of a bulk carrier said "human error" was to blame for the more than 1,000 tons of oil spilled into the coastal waters.

Volunteers in Mauritius are dealing with toxic fumes which are making them sick as they try to remove tonnes of crude oil from the island's formerly crystal-clear waters.