Answer: 
Persian Gulf is the main source for transporting oil. 
Step-by-step explanation: 
- Over 55 percent of the world's oil is contributed by Persian Gulf. It's oil is exported to America, India, Japan, China, Western Europe. 
- It is the Mediterranean sea in the Western Asia, an extension of the Indian Ocean. 
- This was the battle field for Iran-Iraq war where both the parties fought with oil tankers. It has abundant coral reefs, fishing grounds, pearl oysters.