Authorities work against clock to clean up oil spill off China’s coast

(CNN) – A massive oil tanker that sank off the coast of China could affect marine life for decades, environmentalists and experts say.The Iranian-owned Sanchi fell to the ocean floor Sunday, eight days after it collided with a Hong Kong-registered cargo ship, resulting in a toxic, fiery blaze that claimed the lives of 32 crew members.China’s State Oceanic Administration said several oil slicks have already been found, including one nearly 15 kilometers long (9.3 miles