4 Parasites Too Creepy to Exist

  • Published on Aug 11, 2019
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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.
    Hosted by: Hank Green
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Comments • 1 344

  • SciShow
    SciShow  8 days ago +34

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

    • Desus Vult
      Desus Vult 2 days ago

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

    • Humanity is a lost cause Self centered lunatics
      Humanity is a lost cause Self centered lunatics 5 days ago +2

      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.

    • Gaurav Nema
      Gaurav Nema 6 days ago +1

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

    • Władca Wymiaru
      Władca Wymiaru 6 days ago

      @Gaurav Nema
      So WHAT it is?

    • Gaurav Nema
      Gaurav Nema 7 days ago

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

  • Walt Edwards
    Walt Edwards 43 minutes ago


  • Haze87x
    Haze87x 12 hours ago

    #1 is disgusting

  • TheWisestDwarf99
    TheWisestDwarf99 14 hours ago

    The worst parasite?

    My gf
    Nah jk I don't have a girlfriend

  • Peterson A
    Peterson A Day ago +8

    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.

  • Stephen Benner
    Stephen Benner Day ago

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

  • Tammy Rossitto
    Tammy Rossitto Day ago

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

  • Nor Adrenalin
    Nor Adrenalin Day ago

    Gene Stealers?!? Someone get the Ordo Xenos!

  • Björn Caldersparr

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

  • dieubermensch
    dieubermensch Day ago

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

  • Shataki
    Shataki Day ago

    My stomach doesn't feel good now...

  • Kouta Takanashi
    Kouta Takanashi Day ago

    I sure love watching scientific videos while cooking and eating

  • Rigging Doctor
    Rigging Doctor 2 days ago +1

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

  • Kingdom Farts
    Kingdom Farts 2 days ago

    Corpse flowers are fugly tho...

  • ToMiCo 91
    ToMiCo 91 3 days ago

    Humans are a parasite of Earth.

  • Anthony Green
    Anthony Green 3 days ago

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

  • Nill Gddy
    Nill Gddy 3 days ago

    you forgot about illegal immigrants from mexico.

  • Bethanie Petitpas
    Bethanie Petitpas 3 days ago

    "But wait -it gets worse!"

  • Itwilsonboiii
    Itwilsonboiii 3 days ago

    You forget mushrooms on ant

  • Dan Jumash
    Dan Jumash 4 days ago

    Hmm wtf 101?

  • Imran Shishir
    Imran Shishir 4 days ago

    Holy hell!

  • Ray Chang
    Ray Chang 4 days ago

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

  • Rebeça Sabourin
    Rebeça Sabourin 4 days ago

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

  • Myk3sr vLogz
    Myk3sr vLogz 5 days ago

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

  • Emily Turner
    Emily Turner 5 days ago

    Aren't foetuses basically parasites?

    • Nor Adrenalin
      Nor Adrenalin 22 hours ago

      @Emily Turner Well you're welcome ^^

    • Emily Turner
      Emily Turner Day ago

      @Nor Adrenalin oh yh 😂

    • Nor Adrenalin
      Nor Adrenalin Day ago

      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.

  • Moriano Mordekhai
    Moriano Mordekhai 5 days ago

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

  • LeatherNeck 1833
    LeatherNeck 1833 5 days ago

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

  • Fist O' Pain
    Fist O' Pain 5 days ago

    No. 1: My kid

  • DahliasDarkside
    DahliasDarkside 5 days ago

    Go Vileplum! OH GOD U SMELL AWFUL

  • Leah Rose
    Leah Rose 5 days ago

    To my surprise, landlords are not on this list

  • Kep Spark
    Kep Spark 5 days ago

    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!😶

  • akakaki
    akakaki 5 days ago

    More parasites, please! :D

  • its just luke Revive

    Those poor unfortunate souls! 🐙

  • Gajanan Nigade
    Gajanan Nigade 5 days ago

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

  • Gajanan Nigade
    Gajanan Nigade 5 days ago

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

  • Philippecr
    Philippecr 5 days ago +1

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

  • Dave Blane
    Dave Blane 5 days ago

    why all the arm-waving???

  • Ron B
    Ron B 6 days ago

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

  • Homer's Iliad
    Homer's Iliad 6 days ago

    Be honest hank, do you watch College Humor?

  • Matthew Califana
    Matthew Califana 6 days ago

    I heared it thru the grape vine .

  • Mark Ash
    Mark Ash 6 days ago

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

  • Matthew Califana
    Matthew Califana 6 days ago

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

  • Drakilicious
    Drakilicious 6 days ago

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

  • El Fin
    El Fin 6 days ago +2

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

  • Sylvain Piche
    Sylvain Piche 6 days ago

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

  • Lewis Johnson
    Lewis Johnson 6 days ago

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

  • Drevas777
    Drevas777 6 days ago +1

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

  • Ask to seduce Miss
    Ask to seduce Miss 6 days ago

    Let see, psychopath and narcissist.

  • sonny lee
    sonny lee 6 days ago

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

  • James Carmody
    James Carmody 6 days ago

    Disliked for the misleading title; loved the video otherwise!

  • Robeela Khan
    Robeela Khan 6 days ago

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

  • Alex Mercer
    Alex Mercer 7 days ago

    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!

  • firecat6666
    firecat6666 7 days ago +1

    Fun fact: barnacles are crustraceans, just like crabs

  • James Matskogv
    James Matskogv 7 days ago

    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

  • Tony Ortega
    Tony Ortega 7 days ago

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

  • Sarah Morton
    Sarah Morton 7 days ago

    I volunteer to go to mars

  • Fineapple Qveen
    Fineapple Qveen 7 days ago

    You forgot to mention my ex...

  • Finn Beruldsen
    Finn Beruldsen 7 days ago +1

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

  • Ice Karma
    Ice Karma 7 days ago +1

    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!

  • Esoteric Emissary
    Esoteric Emissary 7 days ago +1

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

  • Cameron Strommen
    Cameron Strommen 7 days ago

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

  • Cameron Strommen
    Cameron Strommen 7 days ago

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

  • Iago Silva
    Iago Silva 7 days ago

    2:31 Not to mention Boffins, Bagginses and Bracegirdles

  • Jari Fuller
    Jari Fuller 7 days ago


  • Sudstah Gaming
    Sudstah Gaming 7 days ago

    Puppet barnacle

  • CheckDozeCorners
    CheckDozeCorners 7 days ago

    I heard this through the Grapevine

  • La haba
    La haba 7 days ago +1

    Let see, psychopath and narcissist.

  • Puppet lover
    Puppet lover 7 days ago

    I love Vileplume!!

  • Cassie
    Cassie 7 days ago

    happy. We all deserve to be blissful on our very own terms.

  • Jeremy Morris
    Jeremy Morris 7 days ago

    Professor foxtrot beat you to it.

  • Władca Wymiaru
    Władca Wymiaru 7 days ago

    Thanos should snap those parasites!

    • Cassie
      Cassie 7 days ago

      NO UPFRONT PAYMENT Stark Brian12012011042 is truely the best. Just bought 45,000 Secure Funds Transfer to my Chase account and savings card. He paid off all my pu

  • merwindor
    merwindor 7 days ago

    Are humans parasites?

  • Lachlan Hamilton
    Lachlan Hamilton 7 days ago

    "Parasitic Overlords"...... so... a bit like the Tory party...?

  • Emily An
    Emily An 7 days ago

    Your mom ...

  • Taps fan
    Taps fan 7 days ago

    Oh my God, those parasites turn those poor crabs into soyboys...or to be more precise, soycrabs 😂😂!!

    • Emily An
      Emily An 7 days ago

      ingesting the substance of the host inflicting a physiological transformation. two The parasitic demon can no longer be separated from the host.