Volunteers attempt to clean spilled oil from the bulk carrier ship MV Wakashio, belonging to a Japanese company but Panamanian-flagged, that ran aground on a reef, at the Mahebourg Waterfront in Riviere des Creoles, Mauritius, August 11, 2020. Mauritian volunteers fished dead eels from oily waters on Tuesday as they tried to clean up damage to the Indian Ocean island's most pristine beaches after a Japanese bulk carrier leaked an estimated 1,000 tonnes of oil. REUTERS/Sumeet Mudhoo/L'Express Maurice

Volunteers attempt to clean spilled oil from the bulk carrier ship MV Wakashio, belonging to a Japanese company but Panamanian-flagged, that ran aground on a reef, at the Mahebourg Waterfront in Riviere des Creoles, Mauritius, August 11, 2020. The ship, MV Wakashio, owned by Nagashiki Shipping and operated by Mitsui OSK Lines Ltd, struck a coral reef on Mauritius' southeast coast on July 25 and began leaking oil last week, raising fears of a major ecological crisis. REUTERS/Sumeet Mudhoo/L'Express Maurice

A still image taken from a drone video shows an oil spill after the bulk carrier ship MV Wakashio ran aground on a reef, at Riviere des Creoles, Mauritius, August 8, 2020. Activists told Reuters that dead eels were floating in the water and dead starfish were marked by the sticky black liquid. Crabs and seabirds are also dying. REUBEN PILLAY/REUBSVISION.MU, Virtual Tour of Mauritius/via REUTERS

A man collects leaked oil from the bulk carrier ship MV Wakashio, belonging to a Japanese company but Panamanian-flagged, that ran aground on a reef, at Riviere des Creoles, Mauritius, August 10, 2020. The MV Wakashio is still holding some 2,000 tonnes of oil and it is expected to eventually break up, Prime Minister Pravind Jugnauth said late on Monday, warning that the country must brace for the worst. REUTERS/Dev Ramkhelawon/L'Express Maurice

A drone image shows fishermen on a boat as they volunteer near the area where the bulk carrier ship MV Wakashio, belonging to a Japanese company but Panamanian-flagged, ran aground on a reef, at Riviere des Creoles, Mauritius, August 11, 2020. Tourism is a leading part of the Mauritius economy. The government, which declared an emergency on Friday due to the spill, is working with former colonial ruler France to try to remove the oil. REUTERS/Reuben Pillay

A general view shows the bulk carrier ship MV Wakashio, belonging to a Japanese company but Panamanian-flagged, that ran aground on a reef, at Riviere des Creoles, Mauritius, August 10, 2020. Mauritian volunteers fished dead eels from oily waters on Tuesday as they tried to clean up damage to the Indian Ocean island's most pristine beaches after a Japanese bulk carrier leaked an estimated 1,000 tonnes of oil. REUTERS/Dev Ramkhelawon/L'Express Maurice