St. Matthew Island (phantom island) and H.C. Adams (1883) suggest that the error may have arisen from a confusion with Annobón Island, which lies at the same latitude but at 5°38′E longitude. St. Matthew Island (phantom island) St Matthew Island is a phantom island once thought to lie roughly one thousand kilometers northeast of Ascension Island in the Atlantic Ocean. It appeared on navigational charts until as late as the early twentieth century. It was supposedly located at approximately 2°S 8°W, and was alleged to have been discovered by the Portuguese on St. Matthew's Day 1516. It was shown and named on several maps going
Pemba Island Pemba Island Pemba Island ( "al-Jazīra al-khadrā", literally "The Green Island"), is an island forming part of the Zanzibar Archipelago, lying within the Swahili Coast in the Indian Ocean. With a land area of it is situated about to the north of Unguja, the largest island of the archipelago. In 1964, Zanzibar was united with the former colony of Tanganyika to form Tanzania. It lies east of mainland Tanzania, across the Pemba Channel. Together with Mafia Island (south of Unguja), these islands form the Spice Islands (not to be confused with the Maluku Islands of Indonesia). Most of the island,