The State Oceanic Administration of China said that several oil slicks have already been found, one of them is almost 15 kilometers long (9.3 miles) and another one that covers an area of 58 square kilometers (22.4 square miles) ).
The 900-foot long tanker carried 136,000 tons (about 1 million barrels) of ultralight crude oil at the time of the collision. Ecologists and officials are concerned that the oil on board and the fuel used to power the huge ship could damage nearby aquatic life.
"The most important thing is to understand that when we place hydrocarbons in the oceans through events like this, it will affect a wide range of animals," said Jessica Meeuwig, professor of biological sciences at the University of Western Australia.
Lu Kang, spokesman for the Ministry of Foreign Affairs of China, said that an investigation is already under way.
The water samples tested by the Chinese government showed a dangerously high concentration of oil around the spill.
This could have a detrimental impact on marine life, including aquatic creatures and bacteria, according to Ma Jun, one of China's leading ecologists.
"The collision site was within the area that was considered one of the richest fishing areas in China, the boarding area of Zhoushan," said Ma.
"We still need to monitor how these pollutants could be transported by the flow of the ocean to have the impact on the fishing area. "