4 Parasites Too Creepy to Exist



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    Go to Brilliant.org/SciShow to try their Beautiful Geometry course. The first 200 subscribers get 20% off an annual Premium subscription.
    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.
    Hosted by: Hank Green
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    Published on 11 days ago


    1. SciShow

      Go to Brilliant.org/SciShow to try their Beautiful Geometry course. The first 200 subscribers get 20% off an annual Premium subscription.

      1. Desus Vult

        Nice stock photo of a walleye at 1:54 (Maybe European Zander).

      2. Humanity is a lost cause Self centered lunatics

        Finally got around to covering parasites. Damn, you're slow. Just from the first parasite you listed, I'm already confident I've heard of every one on the list. I'm hardcore on science. Meanwhile, I'm also sure you left off the worst. Humanity.

      3. Gaurav Nema

        @Władca Wymiaru A disease in which abnormal cells divide uncontrollably and destroy body tissue. Learn more at g.co/kgs/Z2Uqwx

      4. Władca Wymiaru

        @Gaurav Nema So WHAT it is?

      5. Gaurav Nema

        @Władca Wymiaru You must be new here. Cancer isn't a parasite.

    2. Fluid Mosaic

      Well that’s killed my libido

    3. Mad Rob

      How about Necromorphs

    4. K Fox

      What if WE’RE PARASITES?

    5. Sj W

      trump = parasite

    6. SquidBoi ·

      *Skullgirls would like to know your location*

    7. Aquilis Blasco

      How did you guys forget to mention cordyceps?

    8. DarkDove_

      my flatmate is a parasite

    9. Walt Edwards


    10. Haze87x

      #1 is disgusting

    11. TheWisestDwarf99

      The worst parasite? My gf Nah jk I don't have a girlfriend

    12. Peterson A

      Step 1. Go to Google Step 2. Search this keyword: 123moviesdaily Step 3. Enjoy! 4 Parasites Too Creepy to Exist It is a curious thing, the death of a loved one. We all know that our time in this world is limited, and that eventually all of us will end up underneath some sheet, never to wake up. And yet it is always a surprise when it happens to someone we know. It is like walking up the stairs to your bedroom in the dark, and thinking there is one more stair than there is. Your foot falls down, through the air, and there is a sickly moment of dark surprise as you try and readjust the way you thought of things.

    13. Stephen Benner

      For some reason this video made me think of Harold Skimpole.

    14. Tammy Rossitto

      Y'all forgot about toxoplasmosis! The parasite you get from cat feces and can turn ears and nice into zombies!

    15. Nor Adrenalin

      Gene Stealers?!? Someone get the Ordo Xenos!

    16. Björn Caldersparr

      "Just one more video before sleep" Oh damn, that will be food for nightmares tonight...

    17. dieubermensch

      1/3 or 1/2 of life is parasitic? now i know why my ex was like that.

    18. Shataki

      My stomach doesn't feel good now...

    19. Kouta Takanashi

      I sure love watching scientific videos while cooking and eating

    20. Rigging Doctor

      Does the government count as a parasite on the populous as the host?

    21. Kingdom Farts

      Corpse flowers are fugly tho...

    22. ToMiCo 91

      Humans are a parasite of Earth.

    23. Anthony Green

      2019... even the crabs got crabs...

    24. Nill Gddy

      you forgot about illegal immigrants from mexico.

    25. Bethanie Petitpas

      "But wait -it gets worse!"

    26. Itwilsonboiii

      You forget mushrooms on ant

    27. Dan Jumash

      Hmm wtf 101?

    28. Imran Shishir

      Holy hell!

    29. Ray Chang

      I think "human bot fly" should be here. Great list!

    30. Rebeça Sabourin

      This didn't gross me out, it just made me really sad for the animals that are infected .

    31. Myk3sr vLogz

      But wait... There's more!!!!

    32. Emily Turner

      Aren't foetuses basically parasites?

      1. Nor Adrenalin

        @Emily Turner Well you're welcome ^^

      2. Emily Turner

        @Nor Adrenalin oh yh 😂

      3. Nor Adrenalin

        By definition a parasitic relationship occurs between to different species. So no.The more detailed definition of a parasite also reduces the host's "fitness". What is meant with fitness here is not how sporty a person or animal is; rather biological fitness describes how likely a population or individual is to pass on their genes. Since having children is detrimental to passing on one's genes - quite the opposite I'd dare say - a fetus doesn't fit that criteria for being a parasite either. There are a couple more things, but the short answer is: no, a fetus wouldn't be considered a parasite.

    33. Moriano Mordekhai

      I'm disgusted, but also, want a part two of this.

    34. LeatherNeck 1833

      I had a blood thirsty, life sucking, manipulative, pain in the @ss parasite once. I finally got a court appointment to remove it.

    35. Fist O' Pain

      No. 1: My kid

    36. DahliasDarkside

      Go Vileplum! OH GOD U SMELL AWFUL

    37. Leah Rose

      To my surprise, landlords are not on this list

    38. Kep Spark

      Talking about weird!😂😂 Maybe that's how evolution works. In millions of years, they might become part of the base creature & the new hybrid creature will be everywhere & called as complex creature. Like us!😶

    39. akakaki

      More parasites, please! :D

    40. its just luke Revive

      Those poor unfortunate souls! 🐙

    41. Gajanan Nigade

      Why am I watching this while having my dinner???!!!

    42. Gajanan Nigade

      Why am I watching this while having my dinner???!!!

    43. Philippecr

      I'm a lil bit surprised that Cordyceps are not included. 🤔

    44. Dave Blane

      why all the arm-waving???

    45. Ron B

      I suddenly remember those parasites in society. They aren't beautiful unfortunately.

    46. Homer's Iliad

      Be honest hank, do you watch College Humor?

    47. Matthew Califana

      I heared it thru the grape vine .

    48. Mark Ash

      You forgot my sister-in-law's son! Thanks for the great videos. 😁

    49. Matthew Califana

      I AM YOUR HOST ! Parasites there,s a big FAT one in the white house !

    50. Drakilicious

      "They mate in the fishes mouth." lol as if it couldnt get any worse.

    51. El Fin

      Are we sure the corpse flower gene swapping isn't another tardigrade like mistake.

    52. Sylvain Piche

      of course... since we are ourself parasites of earth... we take everything and we only hurt it back... something to think about...yes?

    53. Lewis Johnson

      DNA swiped from the grapevine... or evolved from the grapevine?

    54. Drevas777

      G E N E S T E A L E R S

      1. Nor Adrenalin

        Forking Nids

    55. Ask to seduce Miss

      Let see, psychopath and narcissist.

    56. sonny lee

      There's something living in my rectum, something really little and it's scraping against my rectal walls

    57. James Carmody

      Disliked for the misleading title; loved the video otherwise!

      1. Ask to seduce Miss

        I heard this through the Grapevine

    58. Robeela Khan

      *"Habit of going for the mouth"* I see what you did there, Hank!

    59. Alex Mercer

      This is incredibly cool! I.E. If you don't view it as a nightmare, but as superpowers. These parasites seem to have superpowers! How cool! Not nightmarish at all! At all!

    60. firecat6666

      Fun fact: barnacles are crustraceans, just like crabs

    61. James Matskogv

      Couldn't male genitalia be classified as parasitic? I mean think about it 1: They demand a constant supply of nutrients 2: They take over your brain and make you do things 3: They tend to make it very easy to "take care" of them

    62. Tony Ortega

      Open your mouth and say Ahh~ And you too, go Ahh~

    63. Sarah Morton

      I volunteer to go to mars

    64. Fineapple Qveen

      You forgot to mention my ex...

    65. Finn Beruldsen

      I'm not a botanist but i think that corpse flower and corpse lily might be confused in your video.

    66. Ice Karma

      I find it fascinating how, in... recent-ish times, we've gone from thinking that horizontal gene transfer only happened in archaea and bacteria, to discovering plants and even some animals that do it or have done it, too!

    67. Esoteric Emissary

      Do the barnacles work on Crab People.... Crab people.... Crab people.... Crab People...

    68. Cameron Strommen

      Parasitic barnacles? is the next last of us game set in the sea? It could be

    69. Cameron Strommen

      Heard about all of these on your podcast: Scishow Tangents ☺

    70. Iago Silva

      2:31 Not to mention Boffins, Bagginses and Bracegirdles