Socotra, also known as Saqatri, is an island in Yemen located in the Indian Ocean. It is positioned between the Gulf of Aden, the Guardafui Channel, and the Arabian Sea, and is near important shipping routes. Socotra is the largest island in the Socotra archipelago, making up about 95% of the total land area of the group. It is located 380 kilometers (205 nautical miles) south of the Arabian Peninsula and 232 kilometers (125 nautical miles) east of the Horn of Africa. The people who live on the island are called Socotrans, and they speak Arabic and Soqotri.

Socotra is special because it is home to many species that are found only there. About one-third of the island’s plant life exists nowhere else on Earth. Because of its unique geography, Socotra has been called "the most alien-looking place on Earth." The island is 132 kilometers (82 miles) long and 42 kilometers (26 miles) wide at its widest point. In 2008, Socotra was named a UNESCO World Heritage Site.

Etymology

Experts have different ideas about where the island's name came from. One idea is that the name "Socotra" might come from a Greek name that was based on the name of a South Arabian tribe. This tribe was written about in ancient writings called Sabaic and Ḥaḍramitic inscriptions as Dhū-Śakūrid (s³krd). Another idea is that the Arabic name "Suqutra" can be broken into two parts: "suq," which means "market," and "qutra," a common form of "qatir," which refers to dragon's blood. The capital city of Socotra was called "Suq" by the Portuguese in the 16th century, and they described it as a marketplace.

History

There was an early Oldowan stone tool culture in Socotra. Oldowan tools were discovered near Hadibo in 2008. Socotra was important in ancient trade and is mentioned in the Periplus of the Erythraean Sea, a Greek navigation guide from the first century AD, as "the island of Dioscurides."

The Hoq Cave contains many inscriptions, drawings, and archaeological items. Further study showed these were left by sailors who visited Socotra between the first century BC and sixth century AD. The texts are written in Indian Brāhmī, South Arabian, Ethiopic, Greek, Palmyrene, and Bactrian languages. These nearly 250 texts and drawings are key sources for studying Indian Ocean trade during that time.

In 880, an Aksumite military force conquered Socotra, and an Oriental Orthodox bishop was appointed. Later, Ethiopians were driven out by a large fleet from Oman led by Imam Al-Salt bin Malik. According to the Persian geographer Ibn al-Mujawir, who arrived from India in 1222, two groups lived on the island: indigenous mountain dwellers and foreign coastal dwellers. Large communities of Indian traders from Sindh and Balochistan were also present.

Ibn Hawqal, a 10th-century historian, wrote about Socotra in his book The Renaissance of Islam. He described the island as a dangerous place for pirates, stating, "the island Socotra was regarded as a dangerous nest of pirates, at which people trembled as they passed it. It was the point d'appui of the Indian pirates who ambushed the Believers there."

In 1507, a Portuguese fleet led by Tristão da Cunha and Afonso de Albuquerque captured the port of Suq after a battle with the Mahra Sultanate. Their goal was to build a base on the route to India. However, poor harbor conditions and poor land caused famine and disease, leading the Portuguese to abandon the island in 1511. The Mahra sultans regained control, and the island’s people converted to Islam.

In 1834, the East India Company sent troops to Socotra, hoping the Mahra sultan would sell the island. Poor anchorages caused problems for the British, as they had for the Portuguese. The sultan refused to sell, and the British left in 1835. After the British captured Aden in 1839, they lost interest in Socotra. In 1886, the British government signed a protectorate treaty with the sultan, requiring him to avoid agreements with other nations without British approval. In 1967, the Mahra Sultanate was abolished following the British departure from Aden and southern Arabia.

On 30 November 1967, Socotra became part of South Yemen. From 1976 to 1979, the island was used as a Soviet Navy base, though the South Yemeni government denied this. Slavery was abolished under the Yemeni Socialist Party.

Since Yemen’s unification in 1990, Socotra has been part of the Republic of Yemen. Initially, it was affiliated with Aden Governorate. In 2004, it was moved to Hadhramaut Governorate. In 2013, it became its own governorate.

Socotra was affected by the 2004 Indian Ocean earthquake and tsunami, which damaged 40 fishing boats, despite the island being 4,600 km from the epicenter off Aceh, Indonesia. In 2015, cyclones Chapala and Megh severely damaged the island’s infrastructure.

In 2015, the UAE increased its presence on Socotra, initially providing aid after cyclones and later establishing a military presence. On 30 April 2018, as part of the Saudi-led intervention in Yemen, the UAE took control of Socotra Airport and seaport. Saudi troops were also deployed on 14 May 2018, and a deal was made for joint military training and the return of administrative control to Yemen. In June 2020, the UAE-backed Southern Transitional Council (STC) seized control of the island in a coup, removing local authorities and establishing its own government. In 2023, Yemen’s internationally recognized government, the Presidential Leadership Council, integrated the STC into the government and recognized its rule over the archipelago. Under STC rule, peaceful protests against the coup and UAE interference were violently suppressed, and journalists critical of the coup were arrested and beaten.

Geography

Socotra is one of the most remote landforms on Earth that formed from continental material, not from volcanic activity. The island group was once part of the large ancient landmass called Gondwana. It separated during the Miocene epoch, during the same geological events that created the Gulf of Aden to the northwest. Although Socotra is culturally and administratively part of Yemen, it is geographically connected to Africa because it is a piece of land that is linked to the Somali Plate. Socotra is famous for having many species found only there, including about 37% of its plant species, 90% of its reptile species, and 95% of its land snail species.

The archipelago includes the main island of Socotra (3,665 km² or 1,415 mi²), three smaller islands—Abd al Kuri, Samhah, and Darsa—and two rocky islets, Ka'l Fir'awn and Sābūnīyah. These islets are not inhabited but are important for seabirds. Socotra is approximately 125 kilometers (78 miles) long and 45 kilometers (28 miles) from north to south. The island is 232 kilometers (125 nautical miles) from Cape Guardafui, its closest point on the African mainland, and about 351 kilometers (190 nautical miles) from Ras Fartaq on the Arabian mainland. The island has three major physical regions:

• Coastal plains: These narrow areas have unique sand dunes shaped by strong summer winds. The wind lifts sand from the coast and creates the white-colored dunes.
• Limestone plateaus: These include Momi, Homhil, and Diksam, which have karst landscapes with limestone rock and flat areas between hills. For many years, the main economic activity on these plateaus was raising goats and sheep through a traditional farming method called transhumant animal husbandry. This practice has created a unique cultural landscape with systems for collecting and storing rainwater.
• Central massif: This is the Hajhir Mountains, made of granite and metamorphic rocks, reaching a height of 1,503 meters (4,931 feet).

Key features of Socotra include:
– Diksam Plateau
– Momi Plateau with rainwater collection systems, storage areas, and shelters for herders
– Hajhir Mountains
– A wadi (a dry riverbed) on Socotra
– Hawk Cave (Arabic: كهف هوق) located on the eastern side of the island.

Climate

The climate of Socotra is classified using the Köppen system as BWh and BSh, which means it has a hot desert climate and a semi-desert climate with an average yearly temperature above 25°C (77°F). Rainfall is light but occurs throughout the year. When wind from the northeast monsoon, which happens from October to December, hits the island’s interior mountains, it causes more rain in the higher inland areas. These areas receive about 800 millimeters (31.50 inches) of rain yearly, with over 250 millimeters (9.84 inches) each month during November and December. The southwest monsoon season, from June to September, brings strong winds and rough seas.

In a rare event, the usually dry western part of Socotra received over 410 millimeters (16.14 inches) of rain from Cyclone Chapala in November 2015. Cyclones rarely hit the island, but in 2015, Cyclone Megh was the strongest and only major cyclone to strike Socotra directly.

Endemism

The Socotra archipelago is called the Galapagos of the Indian Ocean because of its many different types of plants and animals, many of which are found only there. The island has 835 types of vascular plants, and 37% of them are unique to Socotra. Six bird species, 95% of its land snails and slugs, and 90% of its reptiles are also found only on Socotra. A study in 2016 found that some reptiles on the island have hidden diversity, meaning there may be more reptile species than scientists currently know. Socotra is home to several native mammals, but none of them are unique to the island.

Because the island is dry and small, most of its animals are small in size. Native animals include bats and shrews, such as the Etruscan shrew, which is the smallest mammal in the world by weight. Socotra is especially important for bird researchers because it is an area where many bird species are found only there.

Some of the island's most unique plants and trees are its endemic species. Many plants on Socotra have adapted to the dry climate by storing water in large, swollen stems. One example is the cucumber tree, Dendrosicyos socotranus, the only tree in its plant family. This tree can grow over six meters tall and has special cells that store water during rainy periods.

Because the island has long dry seasons, some plants have evolved to live long lives instead of reproducing quickly. These plants grow slowly and rarely flower or produce fruit. They are found in dry, low areas of the island and are especially at risk from climate change, which could make dry periods longer. One example is the Dragon’s Blood Tree, Dracaena cinnabari, known for its bright red sap. This tree has a unique shape, with a trunk that spreads into a wide, umbrella-like crown. This structure helps the tree collect moisture from the air and protect the soil from drying out. One forest of these trees remains on the island, and the average age of the trees is about 300 years. This suggests the forest is very old and has little new growth.

The high number of unique species on Socotra is due to the island’s long isolation and extreme climate, which vary by location and altitude. These conditions have created many different habitats. Scientists are studying how old these unique species are to understand how they evolved after the island separated from the mainland.

Plants on Socotra are similar to those in northeast Africa and the Indian subcontinent. For example, the genus Dirachma has two species—one on Socotra and one in Somalia, over 1,000 kilometers away. These species share traits, such as flowers with eight parts. Some of Socotra’s unique plants, like those in the Echidnopsis genus, are believed to have evolved from a single ancestor that became isolated. Once separated, this ancestor’s descendants diversified quickly.

The most diverse areas on Socotra are its wet refugia, such as cliffs and escarpments. These areas receive more rain and mist than other parts of the island. These isolated regions have allowed species to evolve into unique forms. Species in refugia are twice as likely to be endemic as those elsewhere on the island. These areas have likely expanded and shrunk many times over the island’s history. The largest refugium is the Hajhir massif, where 55 of the island’s endemic species are found only there.

Over the past decades, Socotra has seen a decline in plant life and biodiversity. These plants are essential for the survival of endemic animals. Factors like erosion, extreme weather, and overgrazing may be causing this decline. Stronger winds from rising global temperatures threaten old-growth forests. Traditional land management practices by local people are becoming less common as outside influences grow. Invasive species, such as rats and cats, also harm native plants and animals. Species on Socotra have adapted to very specific conditions, making them vulnerable to changes. Without help, many endemic species may disappear, including some that have not yet been fully studied.

Demographics

Most people living on Socotra are indigenous Soqotri individuals from the Al-Mahrah tribe, who have origins in the Al Mahrah Governorate of southern Arabia. These people are closely related to the Qara and Mahra groups of southern Arabia. Some residents are of African descent, descendants of former slaves who settled on the island. Many male residents belong to the J* subclade of the Y-DNA haplogroup J. Some female lineages, particularly those in the mtDNA haplogroup N, are found only on Socotra.

About 50,000 people live on Socotra, mainly on the main island. The largest city, Hadibu, had a population of 8,545 in 2004. The second-largest town, Qalansiyah, had 3,862 residents, and Qād̨ub had 929. These places are located on the north coast of the island. Only about 450 people live on 'Abd-al-Kūrī, and 100 on Samha. The island of Darsa and other smaller islands in the archipelago are uninhabited.

The Soqotri language, a Semitic language, is spoken on the island. It is similar to other Modern South Arabian languages such as Mehri, Harsusi, Bathari, Shehri, and Hobyot. These languages were studied by European scholars in the 19th century.

Socotra has a long history of poetry, with an annual poetry competition held on the island. The first known Socotran poet was Fatima al-Suqutriyya, a respected figure in the 9th century. Socotra Swahili is no longer spoken.

The earliest record of Christianity on Socotra comes from the 6th century AD, written by Greek merchant Cosmas Indicopleustes. Later, the island’s people joined the Assyrian church. In the 10th century, Arab geographer Abu Muhammad al-Hasan al-Hamdani noted that most islanders were Christian.

Christianity declined when the Mahra Sultanate gained control in the 16th century. By the time the Portuguese arrived, most residents had become Muslim. A 1884 article in Nature suggested that a Wahhabi mission to the island in 1800 led to the disappearance of Christian churches and monuments. Today, only a few remnants remain, including first-century cross engravings, a few Christian tombs, and some ruined churches.

Transport

Public transport on Socotra is limited to a few minibuses. Most people who need a car hire a 4WD vehicle and a driver. Transport on the island is an important issue because road construction is believed to harm the environment. Road building has caused chemical pollution and broken up animal homes.

The only port on Socotra is located five kilometers east of Hadibu. Ships travel from this port to the Yemeni city of Mukalla. The trip takes two to three days and is mainly used for carrying goods. The United Arab Emirates helped modernize the port.

Before 2015, Yemenia and Felix Airways operated flights from Socotra Airport to Sanaa and Aden through Riyan Airport. However, due to a civil war involving Saudi Arabia's Air Force, all flights to and from Socotra were stopped. During the time Emirati soldiers and aid workers were sent to the island, temporary flights connected Abu Dhabi and Hadibu to provide healthcare and job opportunities. Today, there are weekly flights from Cairo and Abu Dhabi to Socotra.

Tourism

In the 19th century, British explorers Theodore and Mabel Bent, along with their group, visited the island from mid-December 1896 to mid-February 1897. Before the Socotra airport was built, the only way to reach the island was by cargo ship. The best time to visit Socotra is from October to April, as the other months often have heavy monsoon rains, which make travel difficult for tourists and can cause flight cancellations. The island does not have many well-established hotels, but there are a few guesthouses available for visitors staying short-term. Before 2014, the island received more than 1,000 tourists each year, but this number has decreased due to the civil war.

Over the years, tourism to the island has grown as more companies have started offering trips to Socotra. Gulf Today reported that the island "will become a dream destination despite the country's conflict." In May 2021, the Ministry of Information stated that the UAE has been involved in activities on the island for years, planning to control it without permission from the Yemeni government and organizing trips for foreign tourists illegally. In early 2026, hundreds of European and American tourists were stranded on the island after a state of emergency was declared, leading to the closure of all ports. Later, 609 tourists were flown to Jeddah.