The Red Sea is a seawater inlet of the Indian Ocean, lying between Africa and Asia. The connection to the ocean is in the south through the Bab el Mandeb strait and the Gulf of Aden. In the north lie the Sinai Peninsula, the Gulf of Aqaba, and the Gulf of Suez (leading to the Suez Canal). The Red Sea occupies a part of the Great Rift Valley, where the Arabian and African plates are moving apart. It is one of the saltiest bodies of water in the world, owing to high evaporation and low precipitation. The sea is world-renowned for its spectacular coral reefs and diverse marine life, including over 1,200 species of fish, about 10% of which are found nowhere else. It is a critical corridor for global shipping, but its ecosystem is sensitive to the high volume of oil tanker traffic.