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The Most Horrifying Parasites!


The Most Horrifying Parasites!

Science breaks down the creepiest parasites on the planet!
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Written and created by Mitchell Moffit (twitter @mitchellmoffit) and Gregory Brown (twitter @whalewatchmeplz).

The Most Gruesome Parasites – Neglected Tropical Diseases – NTDs

There are a group of parasites extremely disgusting and mean. Humanity declared war on them.

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7 Most Horrifying Parasites On The Planet

From mind-control fungus to worms that swim through your eyeballs. Join us as we vomit our way through 7 of the most horrifying parasites on the planet!





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Cymothoa exigua --- The most horrifying parasite

I took this video at the beach in Freeport, Texas, in 2009. The fish we caught had this creature wiggling around it its mouth. At first, I thought it was the fish's tongue, but I looked it up when I got home because it was just so weird.

In fact, it is not a FISH TONGUE but a Cymothoa exigua, a small parasitic crustacean. This creature enters through the fish's gills, latches on to the base of the tongue, and slowly feeds by sucking the host's blood until the tongue atrophies and falls off. The parasite then replaces the fish's tongue by attaching its own body to the muscles of the tongue stub. This is the only case in nature where a parasite replaces a host organ.


A lot of you are distressed because I killed the parasite toward the end of the video. I did this because I wanted to see if it was filled with roe-like eggs, as a previous Cymothoa had been. Unfortunately, it was just filled with dark, inky crap. However I won't apologize for killing it, because it was gross and deserved to die.

4 Parasites Too Creepy to Exist

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Warning! This episode is a little gross… Between 1/3 and 1/2 of all life on earth is parasitic - and here are 4 of the creepiest parasites we know about.

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Why Parasites May Not Be All That Bad

According to one ecologist, parasites might be the most common form of life on earth. How gross is that?! Trace looks at what these little creatures are doing to our bodies, and how they may not be quite as bad as we're led to believe.

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Tapeworms in Humans

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Parasites - Dracunculiasis (also known as Guinea Worm Disease)

Humans become infected by drinking unfiltered water containing copepods (small crustaceans) which are infected with larvae of D. medinensis.

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The 7 Most Horrifying Parasites on the Planet

As soon as your doctor says you've got parasites in your body, you don't need to hear any more details. They're all horrible, right? How can it get worse than little tiny worms or something feeding on your insides?

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Human Parasites

Hank tells us about all of the things that live on us or in us - the good, the bad, and the very, very ugly.

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Human Parasites You Never Want to Have | Unveiled

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From parasitic worms that live in your stomach, to brain-eating bugs that attack your eyes and nose... In this video, we take a look at some of the most grotesque, dangerous and deadly human parasites out there! And, while they usually hatch as microscopic creatures that feed off of our bodies, they often grow into genuinely terrifying creepy-crawlies. Those of a squeamish disposition, look away now!

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Top 10 Scariest Human Parasites

Top 10 Scariest Human Parasites
Human parasites include various protozoa and worms which may infect humans, causing parasitic diseases. They are divided into endoparasites, which cause infection inside the body, and ectoparasites, which cause infection superficially within the skin.

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What's the nastiest parasite ever? Hint: It's a worm

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Short Description:
The Guinea Worm is an painful parasite that crawls in human skin and causes a blister to form. Oh, and it can grow up to three feet long. The most common way to get rid of it is by slowly wrapping it on a stick over a few weeks. It's also extremely painful and feels like fire.

Long Description:
Why shouldn't you yank out and break the fiery serpent that is the Guinea Worm? Find out in a minute.

If you drink water infested with guinea worm infected fleas, your stomach would digest the flea, but not the worm. The worms then mate in the cavities of your body and after three months, the male worm dies and you absorb it. The males grow to be half to an inch long. But he's not the problem. She is. The female grows to be three feet long, and as thick as spaghetti. She then painfully crawls around your body just under the skin to settle in deep tissues, in your joints, and beside long bones.

Oh and she ain't done with you yet. For a whole year, after having trouble concentrating on school and work from all that pain, a blister forms on your foot and in 72 hours, the burning blister bursts. Because your foot is on fire you sooth it in water at which point this SOB releases her larvae. After release, fleas eat the larva. The larva gets eaten by your cousin Adedimeji and the cycle starts over again.

You now decide that it's time to part ways with the worm. How do you do it? There's no vaccines, or medications, and It's too late for surgery. And then The worm peaks it's tail out the blister and you strike. You grab the worm and prepare to yank it out.

But you shouldn't. If you break the worm, it could cause putrification where the worm rots and and your skin drops off or petrification where worm hardens and stays in your joints.

You should instead wrap it in gauze or a stick and slowly pull over hours, weeks, or months as you gently massage the area. Dracunculiasis is latin for affliction with many fires and that's exactly what it feels like during extraction or when the worm moves. This is the same method egyptians used in 1550 BC, and it's been found in mummies. But now a-days, you have access to Thiabendazole (Parasiticide, could cause worm to migrate), Analgesics (for swelling) and Antibiotics (for infection). But if the wound heals too well or quickly you could break the worm, so you'll have to use some oil to lubricate it.

The best way to combat the worm is to prevent it in the first place. Avoid drinking the fleas by using filters or clean wells. Don't let people with the worm near water supplies, and make sure they empty their larvae infected foot water on dry dirt.

The worm mainly lives in these countries, and humans have almost gotten rid of it. I think it's odd that we want to prevent the extinction of the cape stag beetle, but we feel fine destroying the Guinea worm. But then again, the beetles don't crawl up in your skin. I think we should at least keep a few larvae around just in case it cures skin cancer or something.

Top 10 Most Terrifying Human Parasites


Humans are in a constant state of cohabitation with their environment unfortunately that means we all have to live with parasites, but while some are harmless others are absolutely vile. These are the top 10 most terrifying human parasites.


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10 Terrifying Parasites That Love To Live Inside Human Body

Here are 10 foreign things that live inside the human body.

Parasites and other nuisances know few boundaries, and among some of the creepy crawlies, human skin doesn’t even serve as a deterrent.

Here are 10 foreign things that live inside the human body.

Number 10. Loa loa worms. It’s also called an ‘eye worm’, because that’s where it likes to live, but it’s been known to take up residence elsewhere. Wherever it chooses to roost, expect swelling, irritation, and, if not treated, a 17-year guest.

Number 9. Tyrant king leech. Mucus is among the favorite meals of this bloodsucker, so once it finds a host it heads straight for his or her orifices. The leech itself about the size of a pinky finger, and has teeth that are several times longer than usual. Often times it chooses its next host among individuals swimming in Amazonian streams.

Number 8. Flatworm blood fluke. They start off living on snails, but eventually vacate, spend some time in the water, and often move into a much bigger home – a human. Once they’re settled the flukes proceed to lay eggs in the intestine. The ova not purged from the body sometimes wind up in the liver, where they can cause problematic inflammation.

Number 7. Tapeworms. Another intestine inhabitant, these long, flat parasites latch onto the inner walls of the tract. In humans,they can survive that way for up to 25 years. Malnutrition, weight loss, and fatigue are all signs that a tapeworm may be lurking within.

Number 6. Ticks. Ticks latch onto the skin, and use a feeding tube to suck their victim’s blood. If you don’t remove the entire body, head and all, medical attention is highly recommended. Don’t freak out completely, though. Not all of them carry diseases.

Number 5. Dracunculus medinensis. When they’re just wee baby parasites they attach themselves to water fleas, which is how they get a free ride into a human host. Over time they grow, sometimes up to three feet long. Once they’re ready they’ll start to burrow their way out. Disgusting and painful? Yes. Dangerous? Not necessarily.

Number 4. Chagas parasites. They’re spread by creatures known as kissing bugs attracted to the sleeping faces of humans, and as adorable as their name is, being bitten by one can result in very unpleasant consequences. The parasites they embed in people can stay dormant for years, making them difficult to identify, but when they do strike they can cause organ failure.

Number 3. Toxoplasma gondii. The condition caused by them presents with eye complications, swollen lymph nodes, and muscle aches. Cats have gotten a bad rap for spreading the parasitic microbes, but undercooked meat and even fruits and vegetables can also be carriers.

Number 2. Giardia lamblia. This irritating protozoa causes the most common parasitic infection in the world. It’s spread through oral contact with feces and causes significant gastro-intestinal distress. If chronic, fatigue and depression can occur.

Number 1. Chigoe fleas. You may know them better as sand fleas or jiggers, but no matter what they’re called they’re entirely unpleasant. They often creep up into people’s feet and use the warm, safe space to lay eggs. When the shelter is no longer needed, the foot sometimes bursts open and out comes mamma flea and her hundreds of eggs.

Which parasite would you least want to play host to?

Parasite Infiltrates Bloodstream

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Single-minded, ruthless and devious, the Barbesia parasites are the most deceptive on the planet.


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10.) Euhaplorchis Californiensis
The Euhaplorchis Californiensis is a parasite that is primarily found in southern California. These parasites live on the gut of shorebirds. Once the very tiny eggs of these parasites develop, they are released into the waters through the shorebirds’ feces. These eggs will live and develop into larva if they are swallowed up by snails.

9.) Acacia Trees
Ants and acacia trees have had a relationship for generations. For the longest time, people just assumed this is how it was and no one really looked into the reasoning for this relationship. That was until some scientists discovered that the relationship is actually more one sided than what people have previously thought.

8.) Phorid Flies
Phorid flies are very tiny flies that love to take over ants. Over 20 species of Pseudacteon flies are known to take over fire ants in South America. As an adult they are about the size of an ant’s head. The female fly attacks the ant to insert anywhere from 100 to 300 of its eggs into its thorax.

7.) The Alcon Blue Butterfly
There is a beautiful parasitic butterfly which is known to fool ants. These butterflies are called the Alcon blue butterfly and before they turn into butterflies, they manipulate ants into taking care of them. They basically do this in the same way that the Toxoplasma Gondii parasite in mice fools cats.

6.) Hairworms and Grasshoppers
A parasite known as Spinochordodes Tellinii or more simply the hairworm, develops inside the grasshopper. The worm then slowly begins to eat all the grasshopper’s internal organs, leaving just the legs, head, and outer shell. The worm can grow to be much bigger than the grasshopper, about three to four times bigger!!

5.) Toxoplasma Gondii
Toxoplasma Gondii is a parasite that can actually change your behaviour and how you act, especially towards your cat. It is more commonly called Toxoplasmosis, which is the name of the infection Toxoplasma Gondii creates. Turns out that domestic cats are the only known definitive hosts where the parasite can reproduce and the CDC says that about 40 million people in the United States alone, may be infected and not even know it!!

4.) Spiny-Headed Worm
Like the Euhaplorchis Californiensis, the Acanthocephalans is a gut dwelling parasite. More simply known as the thorny-headed or spiny-headed worm, the adult worm dwells in the guts of a common bird known as the starling. This worm can vary in length as it can be several millimeters and grow up to ten centimeters

3.) Castrator Barnacles
The castrator barnacles, more commonly known as the Sacculina carcini, is a parasite that grows inside a crab. But as you can imagine, it’s called “the castrator” for a reason. The larva seek out unsuspecting crab and enters its shell from where it is the most vulnerable. It becomes a living syringe and attaches itself into the bloodstream.

2.) Glyptapanteles Wasp
The Glyptapanteles is a genus of wasp that turn caterpillars into zombies. The female wasps inject their eggs into caterpillars which are already alive and well. From there, the eggs hatch and the larvae start to grow. As they are growing, they slowly start taking over the caterpillar, feeding on its fluids and taking over its mind to turn it into a bodyguard that protects them.

1.) Cyborg Beetle
Scientists from two different universities have used biology to create robots that can match the agility and efficiency of animals. The Cyborg Beetle is a little biobot that can be used for search and rescue missions and as a spying tool.

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طفيليات لن تصدق انها موجودة \\ Ugliest parasites in the world

الطفيليات هي من أكثر الكائنات إبداعًا على وجه الكرة الأرضية، وبطبيعة الحال ابداع هذه الطفيليلات دائمًا يضر الطرف الآخر، بشرا كان اوكائنات حية علي السواء ويمكن ان يؤدي الي الموت خصوصا عند الحيوانات
في هذة الحلقة سنستعرض ابشع 5 طفبليات علي وجة الارض ولن تتخيلوا مقدار ذكاء وقدرات هذة الطفيليات علي التكيف داخل جسد المضيف وهذة الطفيليات هي بترتيب :
Cymothoa exigua
دودة غينيا
الزنبور القرمزي اللون
    Leocochloridium Paradoxum

ابشع الطفيليات في العالم
ابشع 7 تفيليات في العالم
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Worst Jiggers of 2016! (4) Worst Parasites on Earth!

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MEDICAL CONDITION: The condition depicted is known as Tungiasis. It is an infestation of the skin by a burrowing flea called chigoe fleas. These fleas tend to infest those who have inadequate living conditions and sanitation. The flea lives both outside around warm-blooded mammals and inside poorly constructed homes. It inhabits dust on floors, cracks in walls and bedding. Shoes protect to some degree but are often not affordable or adequate. More needs to be done to ensure a flea-free environment, including extermination and sanitation measures, improvements in home construction and making clean bedding more commonplace.
The parasites burrow into the skin and then swell up with eggs; the larvae hatch and the cycle continues. Fleas cause untold suffering in the afflicted, interfering with sleep, and causing itching, pain and the inability to walk. The parasite can afflict all parts of the body. Victims are often socially stigmatized, left isolated and without family or communal support.

In this video you are seeing the sand fleas being removed from human skin. Viewer discretion is advised!

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The parasites burrow into the skin and then swell up with eggs; the larvae hatch and the cycle continues. These fleas cause untold suffering in the afflicted, interfering with sleep, and causing itching, pain and the inability to walk. The parasite can afflict all parts of the body. Victims are often socially stigmatized, left isolated and without family or communal support.

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The Tongue-Eating Parasite

Gross science: This parasite crawls into a fish's mouth and replaces its tongue. Enough said.

Note: In this video, we refer to the parasites as protoandritic. The real word is protandric. We take accuracy very seriously and we apologize for the error. Thank you to the viewer who pointed this out.


Produced, edited, and animated by
Anna Rothschild

Production Assistant
Allison Eck

Special Thanks
Stefanie Kaiser

Original Footage
© WGBH Educational Foundation 2013


(Ceratothoa sp in Blacktail)
Host: Diplodus sargus sargus (common names: blacktail or white seabream)
Locality: Tsitsikamma National Park, Eastern Cape, South Africa
© Nico Smit

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