Aug. 27 (UPI) -- Dead dolphins are washing onshore in Mauritius following a massive oil spill involving a Japanese-owned ship in July.
As many as 18 dolphins have been found dead along the coast of the island country, prompting calls for an investigation, Al Jazeera reported.
"This is a deeply sad and alarming day for the people of Mauritius," said Happy Khambule, the senior climate and energy campaign manager for Greenpeace Africa, on Wednesday.
"Greenpeace appeals to the authorities to carry out a swift, transparent and public autopsy on the bodies collected."
The ship MV Wakashio, was carrying about 3,800 tons of fuel oil when it ran aground. The vessel struck coral reef on the southeast coast of Mauritius on July 25.
Oil began to leak on Aug. 6. The ship later broke in half, spilling 1,000 tons of fuel oil.
Opinion is divided over whether the oil spill is responsible for the deaths of the dolphins.
Mauritius' fisheries minister said that "at first glance" the deaths appear to be unconnected to the oil, the BBC reported.
Oceanographer Vassen Kauppaymuthoo, who works with coastal fishing communities to prepare for climate change, said the dolphins smelled of fuel.
"In my opinion, this situation will continue to deteriorate as time goes on," Kauppaymuthoo said, according to local media in Mauritius.
Residents of Mauritius say they are devastated by the news of the dead dolphins. Fish and crabs have also been discovered dead by locals.
"Waking up this morning to witness so many dead dolphins on our seashore is worse than a nightmare," said Nitin Jeeha, according to the BBC. "I have seen around eight to 10 dead dolphins. Are there more in the lagoon?"