An oil spill from a stranded tanker off the coast of Oman now covers an estimated 500 square miles (1,300 square kilometers), the environmental organization Greenpeace told CNN, prompting fears that a major ecological disaster could be unfolding in the Arabian Sea.

Oman reports a significant oil spill from a grounded tanker threatening ecosystems. Traffic through the Strait of Hormuz returns to normal by September 30 at 15.

A spill of this scale requires dispersant be sprayed across the affected area by aircraft and the use of booms and other equipment to collect the oil before it reaches the shore…

Contamination reported along coast after explosion on tanker linked to Russia