The western coast of Yemen, like that of Hejaz, is studded with shoals and islands, of which Perim in the Straits of Bab-el-Mandeb, Kamaran, the Turkish quarantine post, 40 m.
Towards the mainland the water shoals, and the best anchorage is under the lee of the island.
These fish frequent rocky shoals off the eastern coast and are caught in numbers outside Port Jackson for the Sydney market.
But the vessels were wrecked upon some shoals about one hundred leagues to the south of Maranhao; the few survivors, after suffering immense hardships, escaped to the nearest settlements, and the undertaking was abandoned.
Beyond this city the navigation is conducted by native craft, - the modern facilities for traffic by rail and the increasing shoals in the river having put an end to the previous steamer communication, which plied until about 1860 as high up as Allahabad.
