Red Sea Trivia
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42 free Red Sea trivia questions with answers — geography quiz, new questions added Sep 2026.
This Red Sea trivia quiz covers the long, narrow inlet of the Indian Ocean that separates Africa from Arabia. The easy questions cover the basics: which continents it divides, the canal at its northern end, the countries on its shores and the famous Bible story set there. The middle of the quiz moves into the geography and science: the two gulfs that flank Sinai, the strait that lets water in from the Gulf of Aden, why the water is so salty and warm, the rift that is slowly widening it into an ocean, and the coral reefs that make it one of the world's great diving destinations. The hard questions go to the ancient Egyptian voyages to Punt, Darius's canal, the Periplus of the Erythraean Sea, Raynald of Chatillon's raid, the hot brine pools on the seabed, volcanic islands that appeared in the 2010s, the sunken SS Thistlegorm and the numbers on how much world trade transits the sea. Expect a genuine mix of geography, history and marine biology. Every answer was checked against encyclopaedia entries for the sea, the Suez Canal, the Bab-el-Mandeb and the Thistlegorm before publishing, and the supporting sentence is stored with each question. Our oceans and Egypt quizzes are natural next stops.
30 of 42 questions with answers and explanations. Play the quiz
Q 01The Red Sea separates Africa from which landmass?
Arabia
Arabia and Africa send it almost no river water, so the sea loses far more to evaporation than rain replaces, making it one of the world's saltiest.
Q 02The Red Sea is an inlet of which larger body of water?
Indian Ocean
Indian Ocean water flows in at the surface through the southern strait, while a strong undercurrent carries dense, salty Red Sea water back out.
Q 03Which peninsula sits between the Gulf of Suez and the Gulf of Aqaba at the top of the Red Sea?
Sinai
Sinai was handed back to Egypt by Israel in 1982, a withdrawal the two countries had agreed in their 1979 peace treaty.
Q 04What is the name of the strait at the southern end of the Red Sea?
Bab-el-Mandeb
Bab-el-Mandeb means 'Gate of Tears' or 'Gate of Grief', a name said to recall its dangerous waters or, in one legend, the people drowned by an earthquake.
Q 05Which country at the southern mouth of the Red Sea hosts both American and Chinese military bases?
Djibouti
Djibouti hosts China's first overseas military base, opened in 2017 to support its navy's anti-piracy patrols, only a few kilometres from the US base.
Q 06Which of these countries has a coastline on the Red Sea?
Sudan
Sudan has a Red Sea coast, but Ethiopia became landlocked when Eritrea, its former province along the sea, broke away in 1993.
Q 07Which Red Sea port has long been the main sea gateway for Muslim pilgrims heading to Mecca?
Jeddah
Jeddah was under Turkish rule until 1916 and was taken by Ibn Saud in 1925, bringing Mecca's port under Saudi rule.
Q 08Which Israeli city sits at the northern tip of the Gulf of Aqaba?
Eilat
Eilat's site was taken in 1949 by Israeli soldiers who had no flag with them, so they drew stripes in ink on a white sheet and raised that.
Q 09Which coffee name comes from a Red Sea port that once shipped the beans?
Mocha
Mocha, a port in Yemen, lent its name to the coffee it exported, yet the beans themselves were grown further inland.
Q 10Seasonal blooms of which kind of organism are one suggested origin of the Red Sea's name?
A cyanobacterium
A cyanobacterium, Trichodesmium erythraeum, turns the water reddish-brown as its blooms die off, though another theory says 'red' once simply meant south.
Q 11Yam Suph, the Hebrew name traditionally translated as the Red Sea, literally means the Sea of what?
Reeds
Reeds is what suph means, the word for the Nile rushes where baby Moses was hidden, so some scholars place the crossing at a reedy marsh.
Q 12Which book of the Bible describes Moses stretching out his hand to part the Red Sea?
Exodus
Exodus says the waters then flowed back over Pharaoh's chariots and horsemen, so that not one of the pursuing soldiers survived.
Q 13Which shrinking body of water was a planned pipeline from the Red Sea meant to help replenish?
Dead Sea
The Dead Sea has been sinking since Israel and Jordan began diverting much of the Jordan River's flow in the 1960s, so leftover water from a desalination plant on the Red Sea was meant to top it up.
Q 21Which spy agency secretly ran a Red Sea diving resort in the early 1980s as cover for rescuing Ethiopian Jews?
Mossad
Mossad agents looked after real holidaymakers by day, while on some nights a squad slipped away to collect refugees, who were then taken out by boat.
Q 22Which British prime minister arranged the purchase of the khedive's shares in the Suez Canal Company in 1875?
Benjamin Disraeli
Benjamin Disraeli borrowed £4 million from his friend Lionel de Rothschild's bank to buy the shares fast, even though Parliament could still have refused the deal.
Q 23Which French diplomat formed the company that built the Suez Canal?
Ferdinand de Lesseps
Q 14Which container ship got stuck across the Suez Canal in March 2021, holding up hundreds of vessels?
Ever Given
Ever Given was pulled free after six days, once two powerful seagoing tugs arrived and a full-moon high tide helped lift its bow off the bank.
Q 15The Red Sea was formed by which tectonic process?
Rifting apart of two plates
Rifting apart of two plates is still under way, as recent volcanic eruptions and earthquakes along the valley show, so the Red Sea keeps slowly getting wider.
Q 16Which seafaring people did Pharaoh Necho reportedly send from the Red Sea to voyage around Africa?
Phoenicians
Phoenicians came back saying the sun had been on their right as they rounded Africa, a claim Herodotus doubted but one that fits sailing west below the equator.
Q 17What did mid-20th-century surveys discover in the deepest parts of the central Red Sea?
Anomalously hot brines
Anomalously hot brines are heated from below the sea floor, and the muds beneath them hold thick deposits rich in metals such as zinc and copper.
Q 18Which British officer helped desert fighters seize the Red Sea port of Aqaba from the Ottomans in 1917?
T. E. Lawrence
T. E. Lawrence reached Aqaba with the fighters after a two-month desert march, then tried to coordinate their raids with General Allenby's advance on Jerusalem.
Q 19Which seagrass-grazing sea mammal lives in the Red Sea's shallow bays?
Dugong
Dugongs pull up whole seagrass plants, roots and all, so a grazing herd leaves furrows and clouds of stirred-up sand along the sea floor.
Q 20Why do northern Red Sea corals survive heat that bleaches other reefs?
Their ancestors came from hotter water
Their ancestors came from hotter water in the south over thousands of years, and the heat tolerance they kept could leave these reefs among the last standing by 2100.
Ferdinand de Lesseps was later found guilty over the failed Panama canal company, though his prison sentence was overturned.
Q 24Which Egyptian leader nationalised the Suez Canal in 1956, triggering the Suez Crisis?
Gamal Abdel Nasser
Gamal Abdel Nasser offered to compensate the company's owners, yet Britain and France secretly planned an invasion with Israel.
Q 25The Suez Canal was closed for eight years after which conflict?
The Six-Day War
The Six-Day War left a convoy of cargo ships stranded mid-canal, and their crews painted their own postage stamps, which Egypt's post still franked.
Q 26The earliest known Red Sea explorations were Egyptian voyages seeking trade with which land?
Punt
Punt was never pinned on a map, but tests on mummified baboons, among the animals Egyptians brought back from Punt, point toward what is now Eritrea.
Q 27Which Persian king built a canal linking the Nile to the Red Sea in the 6th century BCE?
Darius the Great
Darius the Great's own inscriptions celebrate completing the canal, though Strabo says he quit near the end, fearing the higher sea would flood Egypt.
Q 28What is the Periplus of the Erythraean Sea?
A Greek sailing guide
A Greek sailing guide apparently written by a merchant, it credits the pilot Hippalus with first steering straight across open water instead of hugging the coasts.
Q 29Which Portuguese commander besieged Aden in 1513, leading the first modern European fleet into the Red Sea?
Afonso de Albuquerque
Afonso de Albuquerque was beaten back from Aden, but rather than turn back at once he sailed on to explore the sea's coasts.
Q 30In 2024, which headland did hundreds of cargo ships sail around to avoid attacks in the Red Sea?
Cape of Good Hope
Cape of Good Hope detours added about 10 days to each voyage and, by some estimates, around $1 million in extra fuel.