Abd al Kuri euphorbia (Euphorbia abdelkuri). This succulent plant is endemic to the island of Abd al Kuri in the Socotran archipelago of islands, meaning that it is found nowhere else. Succulent plants are adapted to arid conditions by having swollen, water-storing stems and leaves. Abd al Kuri measures 133 square kilometres in size. The Socotra Archipelago is located in the Indian Ocean at the mouth of the Gulf of Aden, 340 kilometres (km) from mainland Yemen and 250km from the coast of Somalia. Its isolation has led to the evolution of a unique flora and fauna.