The form of the Red Sea is not unlike that of a crocodile, having its mouth at the narrow Straits of Mecca or Babelmandeb, the head being that sea which lies between Cape Guardafu and Fartaque, and the extremity of the tail at the town of Suez. Its general direction is from N.N.W. to S.S.E. being 530 leagues long, and 40 over where broadest[132]. The channel for navigation is about the middle, where it has sufficient depth of water for the largest ships, but both sides are very shallow, and much encumbered by sand banks and numerous small islands. No river of any note falls into it during its whole extent. It is called by the Moors or Arabs, _Bahar Corzu_ or the Closed Sea, and by others the Sea of Mecca; but by Europeans the Arabian Gulf or the Red Sea, owing to the red colour it derives from its bottom, as was proved by a subsequent viceroy, Don Juan de Castro, who caused some of the bottom to be dragged up in several places, when it was found to consist of a red coralline substance; while in other places the bottom was green, and white in some, but mostly red. The water itself, when taken up, is as clear as in any other part of the sea. The Red Sea does not abound in fish, but it produces small pearls in many places. The mouth of the Red Sea, called the Straits of Mecca or of Bab-al-mandeb, is in lat. 12° 40' N. and is as it were locked up by seven small islands, the largest of which, now _Mehun_, was called by Ptolemy _Perantonomasiam_. On going from the straits towards Suez along the eastern or Arabian shore, there are only a few small ports of no note for the first 44 leagues, till we come to the island of _Kamaran_, which is subject to the king of Aden. At 60 leagues from thence we come to _Gezan_ a large town; thence 130 leagues to _Yambo_, all in the dominions of Mecca, having several good towns and harbours. Among these are the famous and well known ports of _Ziden_ and _Juddah_, or _Joda_; _Mecca_ being 15 leagues inland from the latter. From Yambo it is 60 leagues to _Toro_, where the children of Israel are said to have crossed the Red Sea, which at this place is 3 leagues across. Thence to _Suez_ is 40 leagues, and there ends the Arabian shore. On sailing back to the straits along the western shore of Egypt and Ethiopia, from Suez which is 20 leagues from Grand Cairo the vast metropolis of Egypt, it is 45 leagues to Al-cosier; thence 135 to the city of Suakem, in which space there are many ports: From thence 70 leagues farther on is the island and port of Massua, and opposite to it Arkiko; and thence other 85 leagues bring us back to the Straits of Bab-el-mandeb. Behind a ridge of mountains which runs close along the whole coast of Ethiopia, lie the dominions of Prester John, which has always preserved Christianity after its own manner, and has of late been much supported therein by the Portuguese arms.