9. Socotra Island
This island has a very interesting vegetation, which makes it a unique and almost anomalous ecosystem. It is part of the archipelago of four islands in the Indian Ocean, which is about 7 million years ago, were separated from Africa. Like the Galapagos Islands, they contain more than 700 rare species of both flora and fauna, and only about a third characteristic of the area.
Socotra, also spelled Soqotra, is an island and a small archipelago of four islands in the Arabian Sea. The territory is part of Yemen, and had long been a subdivision of the Aden Governorate. In 2004, it became attached to the Hadhramaut Governorate, which is much closer to the island than Aden (although the nearest governorate was the Al Mahrah Governorate). In 2013, the archipelago became its own governorate, the Soqatra Governorate.
The island of Socotra constitutes around 95% of the landmass of the archipelago. It lies some 240 kilometres (150 mi) east of the Horn of Africa and 380 kilometres (240 mi) south of the Arabian Peninsula. The island is very isolated and a third of its plant life is found nowhere else on the planet. It has been described as «the most alien-looking place on Earth.» The island measures 132 kilometres (82 mi) in length and 49.7 kilometres (30.9 mi) in width.