Hundreds of pieces of plastic have been found in every litre of Antarctic seawater
In the first attempt to quantify how much plastic has reached the pristine continent, scientists on British Antarctic Survey’s (BAS) ship the James Clark Ross have filtered the water in fjords along the Antarctic Peninsula.
Dave Barnes, a marine ecologist at BAS, said the amount of plastic in the South Atlantic was still rising exponentially and that some of it is now making it through the strong currents that swirl around Antarctica.
“There’s lots more plastic than I was expecting to see. So far it is easily in the hundreds [of pieces] per litre of water, which is very sad because the places we are looking at are pristine and untouched”
“If most of that food is full of tiny plastic fragments then they have wasted time processing a meal that not only isn’t going to give them anything, but worse, will still fill up their stomach so they can eat less next time. It’s a big worry.”
10 facts about Antarctica…
1. Antarctica holds most of the world’s fresh water
An incredible 60-90% of the world’s fresh water is locked in Antarctica’s vast ice sheet. The Antarctic ice sheet is the largest on Earth, covering an incredible 14 million km² (5.4 million square miles) of Antarctic mountain ranges, valleys and plateaus. This leaves only 1% of Antarctica permanently ice-free.
At its deepest, Antarctica’s ice is 4.5km (2.7 miles) thick – that’s half the height of Mt Everest! If it all melted, global sea levels would rise about 60 m (200 ft).
2. Antarctica is a desert
When most of us think of deserts we think of sand dunes and sizzling temperatures, but technically a desert doesn’t have to be hot or sandy, it’s more about how much precipitation the area receives as rain, snow, mist or fog. A desert is any region that receives very little annual precipitation.
The average annual rainfall at the South Pole over the past 30 years was just over 10 mm (0.4 in). Although there is more precipitation towards the coast, the average across the continent is low enough to classify Antarctica as a polar desert.
So while Antarctica may be covered in ice, it has taken an incredible 45 million years to grow to its current thickness, because so little rain falls there.
3. Antarctica used to be as warm as Melbourne
Given that the coldest ever land temperature was recorded in Antarctica of -89.2°C (-128.6°F), it can be hard to imagine Antarctica as a warm, temperate paradise. But Antarctica hasn’t always been an icy land locked in the grip of a massive ice sheet. In fact, Antarctica was once almost as warm as Melbourne is today.
Researchers have estimated that 40-50 million years ago, temperatures across Antarctica reached up to 17°C (62.6°F). Scientists have also found fossils showing that Antarctica was once covered with verdant green forests and inhabited by dinosaurs!
4. The Antarctic Peninsula is one of the most rapidly warming areas on Earth
The Antarctic Peninsula is warming more quickly than many other areas on Earth. In fact, it is one of the most rapidly warming areas on the planet. Over the past 50 years, average temperatures across the Antarctic Peninsula have increased by 3°C (37.4°F), five times the average increase on Earth.
This has led to some changes, for example where and when penguins form colonies and sea ice forms. It also means that the lush mosses of the Antarctic Peninsula have a slightly longer growing season.
5. There is no Antarctic time zone
The question of time in Antarctica is a tricky one. At the South Pole the lines of longitude, which give us different time zones around the globe, all meet at a single point. Most of Antarctica experiences 6 months of constant daylight in summer and 6 months of darkness in winter. Time starts to feel a little different without the normal markers for day and night.
Scientists working in Antarctica generally stay in the time zone of the country they departed from, but this can cause some issues. For example, on the Antarctic Peninsula you can find stations from Chile, China, Russia, the UK and many other countries. You can imagine that if all of these neighbouring stations, keep to their home time zones it could get a little confusing trying to share data and resources without accidentally waking one another up in the middle of the night!
6. Every way is north!
If you stand at the South Pole, you are at the southernmost point on Earth. It doesn’t matter which way you look, every direction is north. So why do we talk about the Antarctic Peninsula as being in West Antarctica, and the section directly south of Australia as East Antarctica?
It’s based on the prime meridian, an imaginary line which passes through Greenwich in the UK at 0 degrees of longitude. If you stand at the South Pole and face towards Greenwich, everything to your left is west Antarctica and everything to your right is east Antarctica.
7. Antarctica has active volcanoes
Antarctica is home to several volcanoes and two of them are active. Mount Erebus, the second-highest volcano in Antarctica is the southernmost active volcano on Earth. Located on Ross Island, this icebound volcano has some unique features such as ice fumaroles and twisted ice statues that form around gases that seep from vents near the volcanic crater.
The first ascent of Mt Erebus was made in 1908, when a team led by Australian scientist Edgeworth David, and including Douglas Mawson, completed an arduous and very chilly five day climb to the steaming crater.
The second active volcano is on Deception Island, a volcanic caldera in the South Shetland Islands. Once home to a thriving whaling station and later a scientific station, it was abandoned after the most recent eruption in 1969.
8. There’s a subglacial lake that flows blood red
In 1911 on a remote glacier in East Antarctica, a strange phenomenon was observed. The lily white ice of the Taylor Glacier was being stained a deep red by water flowing from deep within the glacier.
For many years the source of the red colour remained a mystery, but in 2017 scientists announced that they had discovered the cause. The water flowing from within the glacier was from a subglacial lake high in salt and oxidised iron, and when it came into contact with oxygen the iron rusted, giving the water its striking red shade, and its name: Blood Falls.
9. Antarctica has its own Treaty
When humans caught their first glimpse of Antarctica in 1820, it was the only continent without an indigenous population. Several nations quickly made claims to the continent, which led to significant tension. While some countries argued that Antarctica was rightfully theirs, others heartily disagreed.
As tension mounted, everyone agreed on the need for a peaceful resolution. In December 1959, 12 countries signed the Antarctic Treaty, an unprecedented international agreement to govern the continent together as a reserve for peace and science. Since then, 41 other countries have signed the Treaty and participate in annual meetings, where decisions are made about how human activity in Antarctica is managed. All decisions made within the Antarctic Treaty System are made by consensus, with collaboration and agreement as the central pillars.
Today, the Antarctic Treaty System has expanded to include strict guidelines for commercial fishing, sealing, and a complete ban on mining and mineral exploration.
10. Diamond dust floats in the air
Although there are low levels of precipitation in Antarctica, meteorological wonders abound and diamond dust is one of them!
Diamond dust is made of tiny ice crystals that precipitate out of humid air near the Earth’s surface. It’s a little like an icy fog. As ice crystals hang suspended in the air, sunlight causes them to sparkle, creating a glittering effect that looks like a million tiny floating diamonds. Diamond dust is also responsible for beautiful optical phenomena like sun dogs, halos and light pillars.
What can I do about plastic in the sea?
Everyone can do something to reduce the amount of plastic that enters the ocean. Here are seven ways you can make a difference.
1. Reduce Your Use of Single-Use Plastics
Wherever you live, the easiest and most direct way that you can get started is by reducing your own use of single-use plastics. Single-use plastics include plastic bags, water bottles, straws, cups, utensils, dry cleaning bags, take-out containers, and any other plastic items that are used once and then discarded.
The best way to do this is by:
a) refusing any single-use plastics that you do not need (e.g. straws, plastic bags, takeout utensils, takeout containers)
b) purchasing, and carrying with you, reusable versions of those products, including reusable grocery bags, produce bags, bottles, utensils, coffee cups, and dry cleaning garment bags. And when you refuse single-use plastic items, help businesses by letting them know that you would like them to offer alternatives.
2. Recycle Properly
This should go without saying, but when you use single-use (and other) plastics that can be recycled, always be sure to recycle them. At present, just 9% of plastic is recycled worldwide. Recycling helps keep plastics out of the ocean and reduces the amount of “new” plastic in circulation.
3. Participate In (or Organise) a Beach or River Cleanup
Help remove plastics from the ocean and prevent them from getting there in the first place by participating in or organising a cleanup of your local beach or waterway. This is one of the most direct and rewarding ways to fight ocean plastic pollution. You can simply go to the beach or waterway and collect plastic waste on your own or with friends or family in a #2minutebeachclean
4. Support Bans
Many countries around the world have enacted bans on single use plastic bags, takeout containers, and bottles. You can support the adoption of such policies in your community, such a plastic-free towns.
5. Avoid Products Containing Microbeads
Tiny plastic particles, called “microbeads,” have become a growing source of ocean plastic pollution in recent years. Microbeads are found in some face scrubs, toothpastes, and bodywashes, and they readily enter our oceans and waterways through our sewer systems, and affect hundreds of marine species. Avoid products containing plastic microbeads by looking for “polythelene” and “polypropylene” on the ingredient labels of your cosmetic products (find a list of products containing microbeads here).
6. Spread the Word
Stay informed on issues related to plastic pollution and help make others aware of the problem. Tell your friends and family about how they can be part of the solution, or host a viewing party for one of the many plastic pollution focused documentaries, like Bag It, Addicted to Plastic, Plasticized, or Garbage Island.
7. Support Organizations Addressing Plastic Pollution
There are many non-profit organizations working to reduce and eliminate ocean plastic pollution in a variety of different ways, including Oceanic Society, Plastic Pollution Coalition, 5 Gyres, Algalita, Plastic Soup Foundation, and others. These organizations rely on donations from people like you to continue their important work. Even small donations can make a big difference!
These seven ideas only scratch the surface for ways you can help address the growing problem of plastic pollution in the oceans. The important thing is that we all do something, no matter how small. For more ideas and resources, sign up to join our Blue Habits community of people worldwide committed to joyful daily actions that improve ocean health.