Under the Sea: Shipwrecks, Treasures and Natural Wonders


By: Bambi Turner

4 Min Quiz

Image: shutterstock

About This Quiz

With only five percent of the ocean explored, Earth's oceans are the final frontier. Yet even the small corners of the sea that man has explored have yielded incredible finds, from sunken treasures, to long lost ships, to creations by Mother Nature herself. Take our quiz to see how much you know about the most amazing things hiding beneath the seas.

How many Christ of the Abyss statues rest on the ocean floor, their arms stretched to the heavens?

Three Bronze statues called "Christ the Abyss" lie beneath the seas, waiting for divers to visit. The first was placed in the Italia Riviera in 1954, the second in Grenada in 1961 and the third in Key Largo in 1965.


The city of Port Royal on this Caribbean island sank beneath the sea in 1692.

Port Royal, Jamaica had a reputation as a pirate haven after it was founded by the Spanish in the 16th century. It was the largest city in the Caribbean when it sank during a 1692 earthquake, leaving 33 acres of buildings resting on the sea floor.


What year was the wreck of the Titanic located?

After sinking in 1912, the location of the Titanic was a major mystery until the wreckage was located in 1985. In 2012, the site gained protection from UNESCO, which may help keep out treasure hunters and curiosity seekers.


The remains of the Titanic rest 400 miles east of this country.

The Titanic was discovered by explorer Robert Ballard. It sits around two miles below the sea, 400 miles east of Newfoundland in Canada.


What is the deepest spot in the ocean called?

Situated southwest of Guam, parts of the Mariana Trench extend 36,200 feet below the surface of the ocean. To put it in perspective, the average depth of all the oceans is around 12,100 feet.


What is the name of the world's largest underwater sculpture?

An 18-foot tall, 60-ton concrete sculpture called "Ocean Atlas" was sunk into the sea near Nassau, Bahamas in 2014. It was modeled after a local girl and is meant to draw attention to the plight of the world's oceans.


The remains of this ancient Wonder of the World were discovered off the coast of Egypt in 1968.

Constructed around 280 BC, the Pharos -- or lighthouse -- of Alexandria guided ships into the bustling Harbor of Alexandria. Once thought gone for good, the lighthouse, and many other ruins of the ancient city, were rediscovered beneath the sea in the 1960s.


What name is given to the trench between the North American and Eurasian continental plates?

The Silfra fissure separates the North American and Eurasian continental plates. Located near Iceland, it's one of the world's top dive sites.


What does Kan-Kanan mean in Mayan?

The creators of the world's largest artificial reef in Quintana Roo, Mexico chose the name Kan-Kanan, which means guarding serpent, for their structure. Made from more than a thousand concrete pyramids sunk below the waves, the reef stretches 1.2 miles along the Mexican coast.


Where was the largest artificial reef before Kan-Kanan?

In 2006, the U.S. Navy purposely sank the U.S.S. Oriskany off of Pensacola, Florida, creating what was then the largest artificial reef on the planet. The 44,000 ton warship now protects the coast from erosion and serves as a home for many aquatic species.


What country is home to the world's largest natural barrier reef system?

Australia's Great Barrier Reef is the largest reef system on the planet. Consisting of around 3,000 separate reefs covering 1,400 miles, the Great Barrier Reef is a popular spot for underwater researchers, scientists and divers.


Where is the world's deepest blue hole located?

Blue holes are large underwater caves that appear as large blue circles on the surface of the sea. The deepest blue hole in the world stretches down 1,000 feet in the South China Sea.


Where is the world's oldest known submerged town?

Established around 5,000 years ago, Pavlopetri, Greece sank beneath the sea over time thanks to a series of earthquakes around 1,000 BC. Rediscovered in 1967, the site consists of at least 15 separate buildings ripe for exploration and study.


The biggest volcano in the solar system is under water here on Earth.

Discovered in 2013, Tamu Massif in the Pacific Ocean is the largest volcano in the entire solar system. At more than 4 miles tall, the top of the crater sits 1 mile below the surface of the water.


Where did Britain's S.S. Thistlegorm sink?

The S.S. Thistlegorm sank off the coast of Egypt in 1941. The massive ship still sits on the bottom of the sea, its cargo of motorcycles, vehicles and other World War II equipment left to rust away.


Which Mexican city is famous for its extensive underwater museum?

Between 2009 and 2013, more than 500 sculptures were sunk beneath the sea to create the Cancun Underwater Museum. Many of the sculptures were created using casts of local people, giving them tremendous expression and detail.


How much of the cities of Thonis-Heracleion and Canopus have been excavated as of 2016?

Thonis-Heracleaion and nearby Canopus were major Egyptian port cities around the 7th century BC. Thanks to a series of earthquakes, both cities, and their impressive buildings and artwork, sunk beneath the waves. After a 2016 excavation, just 5 percent of these sites have been excavated, leaving countless treasures under the sea ready to explore.


There's an alien spaceship on the floor of the Baltic Sea.

Exploration group Ocean X found an anomaly in the Baltic Sea in 2011, leaving many to suggest that the structure was a UFO. Experts have determined that the image likely shows a natural rock outcropping or underwater gas vent. Not convinced? Keep in mind that the widely-circulating pictures of the structure that resemble the Millennium Falcon are artist renderings, not actual photos.


Where is the sunken city of Baiae located?

Imagine if Las Vegas ended up underwater -- that's Baiae, which was an Italian resort town on par with Las Vegas back around 178 BC. The cities sculptures and massive temples rest beneath the Gulf of Naples, just waiting to be explored.


What is the wreck of The Zenobia loaded with?

The Zenobia was a Cyprus ferry that sank on its maiden voyage in 1980, taking 120 cars to the bottom of the sea.


How much is the treasure on the Spanish galleon San Jose worth today?

The treasure aboard the Spanish galleon San Jose, which sank in 1708, is valued at around $1 billion. As of 2016, the Colombian government and a U.S. salvage company continue to fight for the rights to the treasure.


Shi Cheng, China was sunk to make way for one of these.

The 600-year-old city of Shi Cheng was sunk in 1959 to make way for a hydroelectric plant. The beautiful carvings and elaborate structures of the city now sit largely intact below Qiandoo Lake.


Adam's Bridge connects these two countries.

Adam's Bridge, also known as Rama's Bridge, consists of limestone shoals connecting India and Sri Lanka. The shoals once served as a bridge between the two countries covering 30 miles, but cyclones and other events have sent much of the structure underwater.


What strange object was found on the Antikythera wreck?

The Antikythera sank around 65 BC near Greece. When it was discovered in 1900, explorers brought up a device now considered one of history's first computers -- the Antikythera Mechanism. The strange device was brought to the surface, but the wreck still sits on the ocean floor.


Where is the Yonaguni Monument located?

Experts still don't know for sure if the Yonaguni Monument off the coast of Japan is man-made or natural. The massive structure measures 27 feet tall and features incredibly straight lines and precise angles that appear as though they were crafted by hand.


What is the underwater city of Atlit-Yam best known for?

Atlit-Yam off the coast of Israel was discovered in 1984 and dates back to 6900 BC. The now-sunken city features a series of stone megaliths arranged in a circle -- like Stonehenge -- along with homes and other structures.


When did the first underwater hotel in the U.S. open for business?

Once a busy research station, the Jules Undersea Lodge in Florida became the first underwater hotel in the U.S. when it opened in 1986.


What sank the SS Yongala off the coast of Queensland, Australia?

The SS Yongala sank in a cyclone in 1911 -- one year before the Titanic. It was rediscovered in 1958 and remains one of the largest and most intact shipwrecks in the world.


What location is home to the first underwater nightclub?

Subsix in the Maldives became the world's first underwater nightclub when it opened in 2010. It was built on land first, then sunk 20 feet below the surface of the Indian Ocean.


What percent of the world's shipwrecks have been explored?

An estimated 3 million shipwrecks remain beneath the seas, and only around 1 percent of these have been explored, leaving plenty of new terrain for underwater explorers.


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