Mauritius is an African Island over 1,200 miles off Africa’s eastern coast. It is inhabited by 1.3 million people. The country depends crucially on its seas for food and for tourism, boasting some of the finest coral reefs in the world.
On July 25th 2020, a Japanese-owned (but Panama-flagged) bulk carrier named Wakashio operated by Mitsui OSK Lines and owned by Nagashiki Shipping, ran aground on a coral reef near Pointe d'Esny in Mauritius and listed under the Ramsar Convention on Wetlands because of its high biodiversity.
Nearly 4,000 tons (3800 tons specifically) of fuel oil and 200 tons of diesel on board started to be leaked into the Mauritius pristine waters [1,2]
Some days later, the government of Mauritius declared a "state of environmental emergency" . Prime Minister Pravind Jugnauth says the spill "represents a danger" for the country of 1.3 million people that relies heavily on tourism .
According to Greenpeace, "The current oil spill on the reef near Pointe d'Esny on the south-east coast of the Mauritian island is likely one of the most terrible ecological crises ever seen on the small island country" 
Regarding International aid, Japan dispatched a six-member team to assist. France sent more than 20 tonnes of technical equipment, such as oil containment booms, pumping equipment and protective gear, also technical advisors from the nearby Île de la Réunion, the French Indian Ocean territory [1,8]
Ecologists fear the ship could break up, which would cause an even greater leak and inflict potentially catastrophic damage on the island's coastline. It was later reported that 2,500 tons had been pumped out. The ship broke into two parts by August 15th. The information about the ecological disaster is still coming in by mid-August 2020.
A clean-up operation conformed by many local volunteers is underway . Compared to other large spills by oil tankers of hundreds of thousands of tons, this was a small one, but the local environment is ecologically priceless and socially very sensitive.
In June 2021, Mitsui OSK Lines created a philanthropic trust to work on various environmental and societal projects, like rehabilitating the mangroves and coral reefs affected by the oil spill. 
In 2021, the captain and the first officer were sentenced to 20 months. 
In October 2021, Okiyo Maritime Corporation (owner of Wakashio ship) « filed a motion before the Mauritian Supreme Court to limit its liability up to 719.6 million of rupees last year, that is around 16.8 million USD ». In reaction, 1,700 seafarers and inhabitants of Mauritius decided to file a lawsuit before the Mauritian Supreme Court against the company, claiming damages for the effects of the oil spill on their livelihood. Ashok Subron, one of the leaders of Rezistans ek Alternativ: “We think that the government is washing its hands regarding the compensation that these persons have the right to expect”. He explained that some fishermen were offered the equivalent of the minimum wage as compensation and had to sign documents that would make them unable to sue the shipowner. “There is an opacity surrounding the government’s action against Okiyo Maritime Corporation. It gives the impression of wanting to negotiate with the Japanese government to finance infrastructural projects. He is taking advantage of the situation for its own needs”, added Subron, a union leader. This is an opinion shared by the environmental NGO Eco-Sud.
Moreover, there is still a lot of missing information about the damages of the oil spill and shipwreck on the reef, but also the effect of the oil on the food chain. According to the Mauritian Wildlife Foundation, the effects could be known in five years.