What body of water separates Saudi Arabia from Africa?

The body of water that separates Saudi Arabia from Africa is the Red Sea. The Red Sea runs along the western coast of Saudi Arabia and the eastern coast of Africa, creating a natural divide between the two land masses. It plays a significant role in maritime trade and has historical importance due to its strategic location for seafaring routes.

The Arabian Sea, while an important water body, is situated to the southeast of Saudi Arabia and does not separate it from Africa. The Caspian Sea, being the largest enclosed inland body of water on Earth, is located far to the north and predominantly between Europe and Asia, making it irrelevant to the region in question. The Persian Gulf, located to the east of Saudi Arabia, separates it from Iran rather than from Africa. Therefore, the Red Sea is the correct choice as it specifically serves as the dividing waterway between the two regions.