What Are the Seven Seas?

iStock / zoom-zoom
iStock / zoom-zoom

There more than 100 bodies of water in the world that are either officially named seas or commonly referred to that way. When someone talks about sailing the “seven seas,” which particular seven are they referring to?

It depends on who you ask, and when. A lot of the time, the term isn’t meant to be taken literally, and simply refers to all the seas and oceans of the world. According to the National Oceanic and Atmospheric Administration, though, ever since the term was first recorded in ancient Mesopotamia in a religious poem, different cultures have used the phrase for specific sets of bodies of water. In different places and at different times, it was applied to trade routes, regional waterways or the waters of far-away, exotic places. 

The ancient Greeks, who introduced the term to the West, applied it to the Adriatic, Aegean, Black, Caspian, Mediterranean and Red seas and the Persian Gulf.

To Medieval Arabian geographers and explorers, the seven seas were the bodies of water they travelled on voyages to the Far East, which they called the Sea of Fars (the modern-day Persian Gulf), Larwi (Gulf of Aden and Arabian Sea), Harkand (Bay of Bengal), Kalah or Kalahbar (Strait of Malacca), Salahit (Singapore Strait), Kardanj (the Gulf of Thailand and the part of the South China Sea between Sumatra and Borneo), and Sanji (South China Sea).

Medieval Europeans, meanwhile, had a few different sets of seven seas that included the Adriatic, Aegean, Arabian, Baltic, Black, Caspian, Mediterranean, North and Red seas, as well as the Persian Gulf, Indian Ocean and Atlantic Ocean. 

During the Age of Exploration and the European discovery of the Americas, some sailors began including New World waters into the group, so the seven seas included the Arctic, Atlantic, Indian and Pacific oceans, the Caribbean and Mediterranean seas and the Gulf of Mexico in different groupings.

The term is mainly used figuratively today, but if you wanted to keep it literal, says NOAA, the world has five major oceans—the Arctic, Atlantic, Indian, Southern (Antarctic) and Pacific—and the Atlantic and Pacific are cut into north and south divisions by the equator, giving you seven “seas” to sail. 

Celebrate the Holidays With the 2020 Harry Potter Funko Pop Advent Calendar


Though the main book series and movie franchise are long over, the Wizarding World of Harry Potter remains in the spotlight as one of the most popular properties in pop-culture. The folks at Funko definitely know this, and every year the company releases a new Advent calendar based on the popular series so fans can count down to the holidays with their favorite characters.

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Right now, you can pre-order the 2020 edition of Funko's popular Harry Potter Advent calendar, and if you do it through Amazon, you'll even get it on sale for 33 percent off, bringing the price down from $60 to just $40.

Funko Pop!/Amazon

Over the course of the holiday season, the Advent calendar allows you to count down the days until Christmas, starting on December 1, by opening one of the tiny, numbered doors on the appropriate day. Each door is filled with a surprise Pocket Pop! figurine—but outside of the trio of Harry, Hermione, and Ron, the company isn't revealing who you'll be getting just yet.

Calendars will start shipping on October 15, but if you want a head start, go to Amazon to pre-order yours at a discount.

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100 Fascinating Facts About Earth

The best Spaceball.
The best Spaceball.

Did you know that there’s a place in the South Pacific Ocean called Point Nemo that’s farther from land than any other point on Earth? So far, in fact, that the closest humans are usually astronauts aboard the International Space Station. (And by the way: The map you’re about to look for Point Nemo on might not be entirely accurate; a certain amount of distortion occurs when trying to depict a 3D planet on a 2D surface.)

In this all-new episode of The List Show, Mental Floss editor-in-chief Erin McCarthy is journeying to the center of the Earth, and visiting its oceans, its atmosphere, and even space, in search of 100 facts about our endlessly fascinating planet.

The subjects that fall under the umbrella of “facts about Earth” are nearly as expansive as Earth itself. Geology, biology, astronomy, and cartography, are all fair game—and those are just a few of the many -ologies, -onomies, and -ographies you’ll learn about below. 

Press play to find out more Earth-shattering facts, and subscribe to the Mental Floss YouTube channel for more fact-filled videos here.