Which sea separates Africa from the Arabian Peninsula?

The sea that separates Africa from the Arabian Peninsula is the Red Sea.

The Red Sea is a long, narrow inlet of the Indian Ocean lying between northeastern Africa and western Asia. Its western shores include Egypt, Sudan, Eritrea, and Djibouti, while Saudi Arabia and Yemen occupy much of its eastern shore. The Bab-el-Mandeb Strait connects it to the Gulf of Aden.

The sea exists because the Arabian Peninsula is pulling away from Africa along the Red Sea Rift. This tectonic spreading has created new oceanic crust beneath parts of the basin, and the Red Sea may eventually widen into a larger ocean.

It is sometimes confused with the Arabian Sea, which lies farther southeast, or the Gulf of Suez and Gulf of Aqaba, which are northern extensions. The Red Sea is also renowned for unusually clear water, coral reefs, and high salinity.