Which sea separates Saudi Arabia from northeastern Africa?

The Red Sea separates Saudi Arabia from northeastern Africa.

It is a seawater inlet of the Indian Ocean, lying between Africa and the Arabian Peninsula. Egypt, Sudan, and Eritrea border its western side, while Saudi Arabia and Yemen border its eastern side. At its northern end, the Red Sea divides into the Gulf of Suez and the Gulf of Aqaba.

The sea is about 2,250 kilometres long and reaches a maximum depth of more than 2,200 metres. It is part of the Great Rift system, where the African and Arabian tectonic plates are pulling apart. This geological setting makes the Red Sea a young ocean basin that is still widening.

The name may refer to reddish seasonal algae, nearby red mountains, or ancient colour-based geographic naming; its exact origin is uncertain. The Red Sea is also famous for coral reefs and for the Suez Canal, which links it with the Mediterranean Sea.