The two Islands are located in the Indian Ocean about 35km off the coast of mainland Tanzania at longitude 39 degrees East and latitude 6 degrees South of Equator. Pemba is about 40 miles long and 14 miles wide. It has a surface area of 608 square miles (2,332 square kilometers). It is located about 36 miles from the continent and 29 miles north-east of Unguja Island. Unguja Island is 50 miles long and 24 miles wide. It has a surface area of 995 square miles. It is separated from the continent by a 21 mile corridor at its narrowest point. Its highest point is 390 feet above sea level.