Geography
An island isolated for millions of years grew trees found nowhere else
Yemen's Socotra archipelago split from the African and Arabian mainlands millions of years ago and evolved in near-total isolation, earning it the nickname 'Galapagos of the Indian Ocean.' Today 37% of its roughly 825 plant species, 90% of its reptiles, and 95% of its land snails live nowhere else on Earth. Its most iconic resident, the umbrella-shaped dragon's blood tree, oozes a crimson resin and is thought to predate the island's very split from the continent.