The nurdles' quest for ocean domination - Kim Preshoff

319,157 views ・ 2014-08-04

TED-Ed


Please double-click on the English subtitles below to play the video.

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Meet the nurdles.
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They may be tiny, look harmless, and sound like a bunch of cartoon characters,
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but don't be fooled.
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These little guys are plotting ocean domination.
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Nurdles are some of the planet's most pervasive pollutants,
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found in lakes, rivers, and oceans across the globe.
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The tiny factory-made pellets form the raw material
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for every plastic product we use.
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And each year, billions of pounds of nurdles
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are produced, melted, and molded
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into toys, bottles, buttons, bags, pens, shoes, toothbrushes, and beads.
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They are everywhere.
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And they come in many guises, multi-colored and many-shaped,
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they range in size from just a few millimeters to mere specks
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that are only visible through a microscope.
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But their real advantage in the quest for ocean domination
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is their incredible endurance, which allows them to persist
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in an environment for generations because their artificial makeup
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makes them unable to biodegrade.
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So, just as long as they don't get into the environment,
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we have nothing to worry about, right?
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The problem is nurdles have a crafty way of doing exactly this.
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Produced in several countries and shipped to plastic manufacturing plants
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the world over, nurdles often escape
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during the production process, carried by runoff to the coast
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or during shipping when they're mistakenly tipped into the waves.
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Once in the water, nurdles are swiftly carried by currents,
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ultimately winding up in huge circulating ocean systems
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called gyres, where they convene to plan their tactics.
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The Earth has five gyres that act as gathering points,
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but the headquarters of nurdle ocean domination
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are in the Pacific Ocean, where the comparative enormity of the gyre
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and the resulting concentration of pollution
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is so huge that it's known as The Great Pacific Garbage Patch.
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Here, nurdles have good company.
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This gyre draws in all kinds of pollution,
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but because they don't biodegrade, plastics dominate,
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and they come from other sources besides nurdles, too.
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You know those tiny beads you see in your face wash or your toothpaste?
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They're often made of plastic, and after you flush them down the drain,
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some also end up in this giant garbage patch,
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much to the delight of the nurdles, building up their plastic army there.
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And then there are the large pieces of unrecycled plastic litter,
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like bottles and carrier bags, transported by runoff from land to sea.
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Over time, these plastic chunks turn into a kind of nurdle, too,
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but one that's been worn down by the elements, not made in a factory.
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And as if they weren't threatening enough,
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the rough, pitted surfaces of these microplastics,
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the name we give to all those collective plastic bits,
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water-born chemicals stick, or adhere, to them,
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making them toxic.
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This gathering has grown so immense that the oceanic garbage patch can shift
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from around the size of Texas to something the size of the United States.
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But while this toxic tornado is circulating,
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the birds, fish, filter feeders, whales, and crustaceans around it
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are just going about their daily business, which means they're looking for food.
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Unfortunately for them, tiny bits of floating plastic
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look a lot like fish eggs and other enticing bits of food.
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But once ingested, microplastics have
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a very different and terrible habit of sticking around.
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Inside an animal's stomach, they not only damage its health
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with a cocktail of toxins they carry but can also lead to starvation
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because although nurdles may be ingested, they're never digested,
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tricking an animal into feeling like it's continually full
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and leading to its eventual death.
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When one organism consumes another, microplastics and their toxins
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are then passed up through the food chain.
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And that's how, bit by bit, nurdles accomplish their goal,
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growing ever more pervasive as they wipe out marine life
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and reshape the ocean's ecosystems.
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So, how to break this cycle?
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The best solution would be to take plastics out of the equation altogether.
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That'll take a lot of time but requires only small collective changes,
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like more recycling, replacing plastics with paper and glass,
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and ditching that toothpaste with the microbeads.
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If we accomplish these things, perhaps over time
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fewer and fewer nurdles will turn up at that giant garbage patch,
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their army of plastics will grow weaker,
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and they'll surrender the ocean to its true keepers once more.
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