In the battle for mind-share, space vs. sea is no contest.
From the epic race to reach the surface of the moon, to the well-documented trials and tribulations of SpaceX’s rocket launches, space is widely regarded as mankind’s natural next step.
For centuries, we’ve gazed at the night sky attempting to decode the messages of the cosmos, but we’ve treated the ocean as a dumping ground or as a nemesis. In the era of big data, it’s strange to note that an estimated 95% of the world’s oceans still remain unexplored.
A Deep Dive Into the World’s Oceans
Today’s video, from Tech Insider, helps shed some light on just how deep the ocean is, and put that depth into a context us surface-dwellers can understand.
The ocean is vast, but looking at it in terms of light and food supply allows us to better understand the structure of that ecosystem.
There are five main oceanic divisions:
|Ocean Zone||Depth (m)||Depth (ft)|
|epipelagic||Surface to 200 m||Surface to 650 ft|
|mesopelagic||200 to 1,000 m||650 to 3,300 ft|
|bathypelagic||1,000 to 4000 m||3,300 to 13,000 ft|
|abyssopelagic||4,000 to 6,000 m||13,000 to 20,000 ft|
|hadopelagic||6,000 to 11,000 m||20,000 to 36,000 ft|
Let’s take a look at each layer in more detail.
Scratching the Surface
The surface layer of the ocean, or epipelagic zone, is the portion we’re most familiar with. This portion of the ocean is amply lit by the sun, and though it’s the smallest zone by volume, it contains much of the ocean’s life. In fact, the phytoplankton living at this level produce half of the world’s oxygen.
One of the chief concerns about climate change is that acidification and temperature changes may dramatically influence levels of phytoplankton in the ocean, thus putting Earth’s largest source of oxygen in jeopardy.
Due to its proximity to sunlight, this layer of the ocean is the fuel that feeds the rest of the ocean. As organisms die, they begin to sink to the lower depths in the form of “marine snow”. This is vital since plant life cannot survive beyond this thin, top layer of water. Put simply, the epipelagic zone feeds the rest of the ocean.
The Twilight Zone
The next layer, called the mesopelagic zone, begins 200m below the surface and extends down to the 1km level. At this point, sunlight illuminating the water begins to wane and water pressure already begins to push beyond what the human body can tolerate.
This dimly lit zone is where we begin to see evolutionary adaptations such as bioluminescence. Large fish and whales also enter this zone to hunt for food.
Hello Darkness, My Old Friend
At 1km below the surface – in the bathypelagic zone – sunlight has faded completely and the ocean is nearly pitch black. This region accounts for 90% of the ocean’s volume and as the video below (via TEDed) explains, this is where things start to get really weird.
The aptly named abyssopelagic zone, begins at 4,000 meters below the surface and extends down to 6,000 meters (or the ocean floor). At this level, the water temperature is nearly at freezing level, and because no sunlight reaches this zone, many of the animals that live here are sightless. The Abyss is the largest zone in the ocean, accounting for about 75% of the ocean floor and 54% of the ocean’s volume.
This region of the ocean is the home of the Abyssal plains. The plains are the upper surface of sediment that has accumulated in abyssal depressions, smoothing out what would otherwise by irregular topography. By this depth the consistent flow of marine snow has decreased dramatically, so organisms depend on occasional “feasts” to survive. Occasionally, events such as large algae blooms near the surface end up delivering huge amounts of food to the ocean floor once those blooms die off.
Abyssal plains could eventually become a big deal economically due to hydrocarbon exploration and mineral extraction. An example of the latter is polymetallic nodules. These potato-sized concretions are scattered around the seafloor at depths greater than 4,000 meters. If it becomes economically viable to harvest these nodules (comprised of manganese, iron, nickel, cobalt, and copper), companies could generate considerable revenue. Currently, there are eight commercial contractors licensed by the International Seabed Authority to explore the extraction of nodule resources.
Earth’s Final Frontier
The hadopelagic zone comprises less than 1% of ocean volume and 0.2% of the seafloor, but looms large as one of Earth’s least understood ecosystems. In fact, more humans have been on the moon than have visited this area of the ocean, and most of this zone only exists within deep water trenches and canyons that extend well beyond the Abyssal plains. There are 33 “hadal trenches” and five of them exceed 10,000 meters – including the world’s deepest oceanic point, the Mariana Trench.
The water pressure here can reach a mind-bending eight tons per square inch, but in spite of the extreme pressure, lack of food, and near-freezing temperatures, life can still be found. Most of the creatures that inhabit the hadal zone are literally bottom feeders; they eat the very last bits of marine snow that reach the trench floor.
While nearly all organisms on Earth derive energy either directly or indirectly from the sun, certain organisms have adapted to survive by using hydrothermal vents as an energy source. Many of the creatures living around vents contain symbiotic bacteria, which subsist off hydrogen sulphide emissions. This unique ecosystem provides clues for how life could exist on other planets with more extreme ecosystems.
A Map of the Online World in Incredible Detail
This unique map provides an in-depth snapshot of the state of the world wide web, highlighting the most popular websites on the internet.
A Map of the Online World in Incredible Detail
The internet is intangible, and because you can’t see it, it can be hard to comprehend its sheer vastness. As well, it’s difficult to gauge the relative size of different web properties. However, this map of the internet by Halcyon Maps offers a unique solution to these problems.
Inspired by the look and design of historical maps, this graphic provides a snapshot of the current state of the World Wide Web, as of April 2021. Let’s take a closer look!
But First, Methodology
Before diving into an analysis, it’s worth touching on the methodology behind this graphic’s design.
This map highlights thousands of the world’s most popular websites by visualizing them as “countries.” These “countries” are organized into clusters that are grouped by their content type (whether it’s a news website, search engine, e-commerce platform, etc).
Editor’s fun fact: Can you spot Visual Capitalist? We’re right in between TechCrunch and The Guardian above.
The colored borders represent a website’s logo or user interface. In terms of scale, each website’s territory size is based on its average Alexa web traffic ranking. The data is a yearly average, measured from January 2020 to January 2021.
Along the borders of the map, you can find additional information, from ranked lists of social media consumption to a mini-map of average download speeds across the globe.
According to the designer Martin Vargic, this map took about a year to complete.
Top 50 Most Popular Websites
Google and YouTube take up a lot of space, which is unsurprising—they’re the two highest-ranked websites on the list:
|28||Google.com.hk||🇭🇰 Hong Kong|
|36||Naver.com||🇰🇷 South Korea|
Google has held the title as the internet’s most popular website since 2010. While Google’s popularity is well understood, the company’s dominance might be even more widespread than you’d think—across all Google-owned platforms (including YouTube) the company accounts for 90% of all internet searches.
The third highest ranked website is Tmall. For those who don’t know, Tmall is a Chinese e-commerce platform, owned by Alibaba Group. It focuses on Business-to-Consumer (B2C) transactions, and has established itself as the most popular e-commerce website in China—in Q1 2021, Tmall accounted for more than 50% of China’s B2C online transactions.
A High Level Look
When it comes to the top 50 websites overall, a majority are either social networking platforms, search engines, or online marketplaces—while this may not come as a surprise, it’s still powerful to see visualized. For instance, even a huge, well-known website like the New York Times is just a tiny country on this map.
And of course, a map of the internet isn’t complete without mention of the dark web.
While it’s challenging to determine its true size, research indicates that the dark web accounts for a large portion of the internet’s true size. And apparently, it’s growing steadily, with the help of anonymous cryptocurrencies like Bitcoin.
For the most part, it’s believed that the dark web is used for unsavory reasons—however, it’s not all bad. Because of its anonymous nature, it can be used as a safe space for whistleblowing or activism.
Overall, this map, and the internet as a whole, has many places for us to explore. When you dive in, what “countries” catch your eye?
Timeline: The World’s Biggest Passenger Ships from 1831-Present
This giant infographic explores the biggest passenger ships on the open seas, over a period of almost 200 years.
Breaking Records: The Biggest Passenger Ships since 1831
The Titanic lives large in our minds, but it’s probably not surprising that the world record for biggest passenger ship has been broken many times since its era. In fact, today’s largest passenger ship can now hold over 6,000 people—more than double the Titanic’s capacity.
This graphic by HMY Yachts looks at which vessels held the title of the world’s largest passenger ship over time, and how these vessels have evolved since the early 19th century.
Different Types of Passenger Ships
Before diving into the ranking, it’s worth explaining what constitutes a passenger ship.
Passenger ships are vessels whose main purpose is to transport people rather than goods. In modern times, there are three types of passenger ships:
- Cruise ships: Used for vacationing, with a priority on amenities and luxury
- Ferries: Typically used for shorter day trips, or overnight transport
- Ocean liners: The traditional mode of maritime transport, with a priority on speed
Traditional ocean liners are becoming obsolete, largely because of advancements in other modes of transportation such as rail, automobile, and air travel. In other words, the main priority for passenger ships has changed over the years, shifting from transportation to recreation.
Now, luxury is the central focus, meaning extravagance is part of the whole cruise ship experience. For example, the Navigator of the Seas (which was the largest passenger ship from 2002-2003) has $8.5 million worth of artwork displayed throughout the ship.
A Full Breakdown: Biggest Passenger Ships By Tonnage
Now that we’ve touched on the definition of a passenger ship and how they’ve evolved over the years, let’s take a look at some of the largest passenger ships in history.
The first vessel on the list is the SS Royal William. Built in Eastern Canada in the early 1800s, this ship was originally built for domestic travel within Canada.
In addition to being the largest passenger ship of its time, it’s often credited as being the first ship to travel across the Atlantic Ocean almost fully by steam engine. However, some sources claim the Dutch-owned vessel Curaçao completed a steam-powered journey in 1827—six years before the SS Royal William.
In 1837, The SS Royal William was dethroned by the SS Great Western, only to change hands dozens of times before 1912, when the Titanic entered the scene.
|SS Royal William||1831 – 1837||1,370 GRT||155 passengers|
|SS Great Western||1837 – 1839||1,340 GRT||128 passengers, 20 servants, 60 crew|
|SS British Queen||1839 – 1840||1,850 GRT||207 passengers|
|SS President||1840 – 1841||2,366 GRT||110 passengers, 44 servants|
|SS British Queen||1841 – 1843||1,850 GRT||207 passengers|
|SS Great Britain||1843 – 1853||3,270 GRT||360 passengers, 120 crew|
|SS Atrato||1853 – 1858||3,466 GRT||762+ passengers|
|SS Great Eastern||1858 – 1888||18,915 GRT||4,000 passengers, 418 crew|
|SS City of New York||1888 – 1893||10,499 GRT||1,740 passengers, 362 crew|
|RMS Campania and RMS Lucania||1893 – 1897||12,950 GRT||2,000 passengers, 424 crew|
|SS Kaiser Wilhelm der Grosse||1897 – 1899||14,349 GRT||1,506 passengers, 488 crew|
|RMS Oceanic||1899 – 1901||17,272 GRT||1,710 passengers, 349 crew|
|RMS Celtic||1901 – 1903||20,904 GRT||2,857 passengers|
|RMS Cedric||1903 – 1904||21,035 GRT||1,223 passengers, 486 crew|
|RMS Baltic||1904 – 1906||23,876 GRT||2,875 passengers|
|SS Kaiserin Auguste Victoria||1906 – 1907||24,581 GRT||2,466 passengers|
|RMS Lusitania||1907||31,550 GRT||2,198 passengers, 850 crew|
|RMS Mauretania||1907 – 1911||31,938 GRT||2,165 passengers, 802 crew|
|RMS Olympic||1911 – 1912||45,324 GRT||2,435 passengers, 950 crew|
|RMS Titanic||1912||46,328 GRT||2,435 passengers, 892 crew|
|SS Imperator||1913 – 1914||52,117 GRT||4,234 passengers, 1,180 crew|
|SS Vaterland||1914 – 1922||54,282 GRT||1,165 passengers|
|RMS Majestic||1922 – 1935||56,551 GRT||2,145 passengers|
|SS Normandie||1935 – 1936||79,280 GRT||1,972 passengers, 1,345 crew|
|RMS Queen Mary||1936||80,774 GRT||2,139 passengers, 1,101 crew|
|SS Normandie||1936 – 1946||83,404 GRT||1,972 passengers, 1,345 crew|
|RMS Queen Elizabeth||1946 – 1972||83,673 GRT||2,283 passengers, 1000+ crew|
|SS France and SS Norway (1962-1980)||1972 – 1987||66,343 GRT||2,044 passengers, 1,253 crew|
|MS Sovereign of the Seas||1987 – 1990||73,529 GT||2,850 passengers|
|SS Norway||1990 – 1995||76,049 GT||2,565 passengers, 875 crew|
|Sun Princess||1995 – 1996||77,499 GT||2,010 passengers, 924 crew|
|Carnival Destiny||1996 – 1998||101,353 GT||2,642 passengers, 1,150 crew|
|Grand Princess||1998 – 1999||109,000 GT||2,590 passengers, 1,110 crew|
|Voyager of the Seas||1999 – 2000||137,276 GT||3,138 passengers, 1,181 crew|
|Explorer of the Seas||2000 – 2002||137,308 GT||3,114 passengers, 1,180 crew|
|Navigator of the Seas||2002 – 2003||139,999 GT||4,000 passengers, 1,200 crew|
|RMS Queen Mary 2||2003 – 2006||148,528 GT||2,640 passengers, 1,256 crew|
|MS Freedom of the Seas||2006 – 2007||154,407 GT||4,515 passengers, 1,300 crew|
|Liberty of the Seas||2007 – 2009||155,889 GT||4,960 passengers, 1,300 crew|
|Oasis of the Seas||2009 – 2016||225,282 GT||6,780 passengers, 2,165 crew|
|Harmony of the Seas||2016 – 2018||226,963 GT||6,780 passengers, 2,300 crew|
|Symphony of the Seas||2018 – present||228,081 GT||6,680 passengers, 2,200 crew|
The Titanic was one of three ships in the Olympic-class line. Of the three, two of them sank—the Titanic in 1912, and the HMHS Britannic in 1916, during World War I. Some historians believe these ships sank as a result of their faulty bulkhead design.
Fast forward to today, and the Symphony of the Seas is now the world’s largest passenger ship. While it boasts 228,081 in gross tonnage, it uses 25% less fuel than its sister ships (which are slightly smaller).
COVID-19’s Impact on Cruise Ships
2020 was a tough year for the cruise ship industry, as travel restrictions and onboard outbreaks halted the $150 billion industry. As a result, some operations were forced to downsize—for instance, the notable cruise operation Carnival removed 13 ships from its fleet in July 2020.
That being said, restrictions are slowly beginning to loosen, and industry experts remain hopeful that things will look different in 2021 as more people begin to come back on board.
“[There] is quite a bit of pent-up demand and we’re already seeing strong interest in 2021 and 2022 across the board, with Europe, the Mediterranean, and Alaska all seeing significant interest next year.”
-Josh Leibowitz, president of luxury cruise line Seabourn
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