4 Parasites Too Creepy to Exist

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  • Published on Aug 11, 2019
  • 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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    Sources:
    www.otago.ac.nz/parasitegroup/PDF%20papers/Poulin2014-IJP.pdf
    www.researchgate.net/publication/300095919_Effect_of_the_parasitic_isopod_Anilocra_apogonae_Cymothoidae_on_the_growth_condition_reproduction_and_survival_of_cardinal_fish_Apogonidae
    repositories.lib.utexas.edu/handle/2152/ETD-UT-2012-08-6285
    www.researchgate.net/profile/Denham_Parker/publication/257377303_The_tongue-replacing_isopod_Cymothoa_borbonica_reduces_the_growth_of_largespot_pompano_Trachinotus_botla/links/0c960533d44dfbd0d1000000.pdf
    aquaticcommons.org/8583/1/NG_62_2003_Williams&Bunkley-Williams_Fish-parasitic_isopods.pdf
    www.researchgate.net/publication/319913453_First_record_of_the_snapper-choking_isopod_Cymothoa_excisa_Isopoda_Cymothoidae_parasitizing_invasive_lionfish_Pterois_volitans_Scorpaeniformes_Scorpaenidae
    people.oregonstate.edu/~blaustea/pdfs/JohnsonBlausteinEcoMonographs.pdf
    www.researchgate.net/publication/8211765_Review_of_the_Trematode_Genus_Ribeiroia_Psilostomidae_Ecology_Life_History_and_Pathogenesis_with_Special_Emphasis_on_the_Amphibian_Malformation_Problem
    zslpublications.onlinelibrary.wiley.com/doi/full/10.1111/jzo.12094www.cambridge.org/core/journals/journal-of-the-marine-biological-association-of-the-united-kingdom/article/biology-and-life-cycle-of-the-rhizocephala-cirripedia/11C2E47CABCABB175F4C49B1393BE125
    www.sciencedirect.com/science/article/pii/S138511011530037X
    nph.onlinelibrary.wiley.com/doi/pdf/10.1046/j.1469-8137.2002.00396.x
    www.harvardmagazine.com/2017/03/colossal-blossom
    bulbapedia.bulbagarden.net/wiki/Vileplume_(Pok%C3%A9mon)
    www.ncbi.nlm.nih.gov/pmc/articles/PMC3460754/

    Image Sources:
    commons.wikimedia.org/wiki/File:Amphiprion_clarkii_-_Cymothoa_exigua_(28999213532).jpg
    commons.wikimedia.org/wiki/File:Cymothoa_exigua_parassita_Lithognathus_mormyrus.JPG
    commons.wikimedia.org/wiki/File:Annual_report_of_the_Game_and_Fisheries_Department_of_Ontario,_1921-34%22_(19176931660).jpg
    commons.wikimedia.org/wiki/File:P._regilla_with_parasite-induced_limb_malformation.png
    commons.wikimedia.org/wiki/File:Leucochloridium.ogv
    commons.wikimedia.org/wiki/File:Three-legged_frog_(Rana_temporaria)_(8137866910).jpg
    commons.wikimedia.org/wiki/File:Greenfrog_life_stages.svg
    commons.wikimedia.org/wiki/File:Sacculina_carcini.jpg
    www.eurekalert.org/multimedia/pub/144794.php?from=363929
    commons.wikimedia.org/wiki/File:Haeckel_Sacculina.jpg
    commons.wikimedia.org/wiki/File:Wurzelkrebs-drawing.jpg
    commons.wikimedia.org/wiki/File:Xantho_poressa_2009_G1.jpg
    commons.wikimedia.org/wiki/File:Ah,_Rafflesia!_(11967075415).jpg
    commons.wikimedia.org/wiki/File:Rafflesia_zollingeriana_Kds.jpg
    commons.wikimedia.org/wiki/File:Rafflesia-Bud_on_Liana.jpg
    commons.wikimedia.org/wiki/File:This_Rafflesia_is_already_showing_signs_of_wilting_(11967407133).jpg
    commons.wikimedia.org/wiki/File:Stamps_of_Indonesia,_029-08.jpg
    commons.wikimedia.org/wiki/File:Rafflesia_arnoldii_cycle.jpg

Comments • 1 313

  • SciShow
    SciShow  4 days ago +32

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

    • Humanity is a lost cause Self centered lunatics
      Humanity is a lost cause Self centered lunatics Day ago +1

      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 2 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 2 days ago

      @Gaurav Nema
      So WHAT it is?

    • Gaurav Nema
      Gaurav Nema 3 days ago

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

    • Władca Wymiaru
      Władca Wymiaru 3 days ago

      *HEY!*
      The SCARIEST parasite even wasn't on the LIST!!!
      *IT IS CANCER* !!!

  • Ray Chang
    Ray Chang 12 hours ago

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

  • Rebeça Sabourin
    Rebeça Sabourin 14 hours ago

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

  • Myk3sr vLogz
    Myk3sr vLogz 23 hours ago

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

  • Emily Turner
    Emily Turner Day ago

    Aren't foetuses basically parasites?

  • Moriano Mordekhai

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

  • 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.

  • Fist O' Pain
    Fist O' Pain Day ago

    No. 1: My kid

  • DahliasDarkside
    DahliasDarkside Day ago

    Go Vileplum! OH GOD U SMELL AWFUL

  • Leah Rose
    Leah Rose Day ago

    To my surprise, landlords are not on this list

  • Kep Spark
    Kep Spark Day 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 Day ago

    More parasites, please! :D

  • its just luke Revive

    Those poor unfortunate souls! 🐙

  • Gajanan Nigade
    Gajanan Nigade Day ago

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

  • Gajanan Nigade
    Gajanan Nigade Day ago

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

  • Philippecr
    Philippecr Day ago +1

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

  • Dave Blane
    Dave Blane Day ago

    why all the arm-waving???

  • Ron B
    Ron B 2 days ago

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

  • Homer's Iliad
    Homer's Iliad 2 days ago

    Be honest hank, do you watch College Humor?

  • Matthew Califana
    Matthew Califana 2 days ago

    I heared it thru the grape vine .

  • Mark Ash
    Mark Ash 2 days ago

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

  • Matthew Califana
    Matthew Califana 2 days ago

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

  • Drakilicious
    Drakilicious 2 days ago

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

  • El Fin
    El Fin 2 days ago +2

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

  • Sylvain Piche
    Sylvain Piche 2 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 2 days ago

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

  • Drevas777
    Drevas777 2 days ago

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

  • Ask to seduce Miss
    Ask to seduce Miss 2 days ago

    Let see, psychopath and narcissist.

  • sonny lee
    sonny lee 2 days ago

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

  • James Carmody
    James Carmody 2 days ago

    Disliked for the misleading title; loved the video otherwise!

  • Robeela Khan
    Robeela Khan 2 days ago

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

  • Alex Mercer
    Alex Mercer 3 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 3 days ago

    Fun fact: barnacles are crustraceans, just like crabs

  • James Matskogv
    James Matskogv 3 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 3 days ago

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

  • Sarah Morton
    Sarah Morton 3 days ago

    I volunteer to go to mars

  • Fineapple Qveen
    Fineapple Qveen 3 days ago

    You forgot to mention my ex...

  • Finn Beruldsen
    Finn Beruldsen 3 days ago

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

  • Ice Karma
    Ice Karma 3 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 3 days ago +1

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

  • Cameron Strommen
    Cameron Strommen 3 days ago

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

  • Cameron Strommen
    Cameron Strommen 3 days ago

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

  • Iago Silva
    Iago Silva 3 days ago

    2:31 Not to mention Boffins, Bagginses and Bracegirdles

  • Jari Fuller
    Jari Fuller 3 days ago

    Sick.....Cool

  • Sudstah Gaming
    Sudstah Gaming 3 days ago

    Puppet barnacle

  • CheckDozeCorners
    CheckDozeCorners 3 days ago

    I heard this through the Grapevine

  • La haba
    La haba 3 days ago +1

    Let see, psychopath and narcissist.

  • Puppet lover
    Puppet lover 3 days ago

    I love Vileplume!!

  • Cassie
    Cassie 3 days ago

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

  • Jeremy Morris
    Jeremy Morris 3 days ago

    Professor foxtrot beat you to it.

  • Władca Wymiaru
    Władca Wymiaru 3 days ago

    Thanos should snap those parasites!

    • Cassie
      Cassie 3 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 3 days ago

    Are humans parasites?

  • Lachlan Hamilton
    Lachlan Hamilton 3 days ago

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

  • Emily An
    Emily An 3 days ago

    Your mom ...

  • Taps fan
    Taps fan 3 days ago

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

    • Emily An
      Emily An 3 days ago

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

  • RANDOMANONYMOUSDude
    RANDOMANONYMOUSDude 3 days ago

    No toxoplasma gondii? Disappointing.

  • Amy Leigh
    Amy Leigh 3 days ago

    OMG! Hank Green! I had no idea he had a show other than Crash Course! ..I clearly don’t get out much. ..
    Dear Hank Green - thank you for all you’ve contributed to my education. You’re such a talented educator and I’m so happy to see you’re still teaching and advocating for access to education.

  • Lamia'sFaust
    Lamia'sFaust 3 days ago

    Im a lil bummed about this video, the crab thing was super cool, and i didnt know corpse flowers were grapevine parasites, but everything else talked about felt kinda old hat? Like im in my mid 20’s so maybe im less the target audience but I always feel bummed leaving a scishow vid feeling like i havent actually learned anything new

  • singerliljermz
    singerliljermz 3 days ago

    These parasites are aliens especially that flower nearing the end of the video.

  • Edgar Wen
    Edgar Wen 3 days ago

    this is probably one of the worst ways to find out about a crab's "brooding chamber"

  • sinephase
    sinephase 3 days ago

    and now we need an entire episode about cordyceps (if you don't have on already :P)

  • Tramaine Terrance
    Tramaine Terrance 3 days ago

    Hello, Humans.
    Mysterio: People need to believe and nowadays they will believe anything.
    (Spider-Man Far From Home)
    TERRANCE OUT

  • Meowi The Kittycorn
    Meowi The Kittycorn 3 days ago

    before watching this:

    ppl: parasites are gross
    me: meh idc bout them much

    after watching this:

    ppl: eww!!i gotta be more cautious
    me:-sees a parasite on a crab- O MY GOODNESS -burns the infected crab-

  • TheNameIsBrayden X
    TheNameIsBrayden X 3 days ago

    What about the Emerald Cockroach Wasp aka the Zombie Wasp? It’s a wasp parasite species that find cockroaches, stings it to paralyze, and manipulates it’s mind to letting the wasp lay it’s larvae inside the cockroaches stomach. Over time, the larvae feed on the cockroaches nutrition and eat everything till their all grown up. I don’t know what the male does, but the female does all of this and continues to do so.

  • * SIMON Says
    * SIMON Says 3 days ago

    Democrats are parasites

  • Deep hug
    Deep hug 3 days ago

    increased risk taking.

  • Pisces Guy JF
    Pisces Guy JF 3 days ago

    I love Vileplume!!

  • Willy Wacker
    Willy Wacker 3 days ago +3

    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 pupil loans, personal loan and savings card debt. Contact licensed financial institution I.T specialist securely at starkbrian5gmail.com Whatsapp: 12012011042 I am fantastically happy. We all deserve to be blissful on our very own terms.

    • Deep hug
      Deep hug 3 days ago

      Toxoplasmosis - infects cats, rats...and humans. Causes behavioral changes in rats (that make them more likely to be eaten by cats)......and humans too, which causes

  • Tracy Green
    Tracy Green 3 days ago

    NO UPFRONT PAYMENT!! Stark Brian{+1(201)201-1042} is simply the best. Just got $45,000 Secure Funds Transfer to my Chase account and credit card. He paid off all my student loans, mortgage and credit card debt. Contact licensed bank I.T expert securely at starkbrian5@gmail.com
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    I am incredibly happy. We all deserve to be happy on our own terms.

  • Bloom Potato
    Bloom Potato 3 days ago

    Try parasitic wasps. Especially tarantula hawks. Gruesome my dude

  • angel olivares
    angel olivares 3 days ago

    So basically we’re parasites

  • Amber Harrelson
    Amber Harrelson 3 days ago +2

    house aliens demons.the extraterrestrial invasion is very real. two It is a bodily invasion they take over the whole human being, the host. They are precisely parasitic, surely ingesting the substance of the host inflicting a physiological transformation. two The parasitic demon can no longer be separated from the host.

  • Big Tone
    Big Tone 3 days ago

    Your mom ...

  • Victoria 666
    Victoria 666 3 days ago

    Wow these creatures are just like my ex-best friend

  • wrath of the lamb
    wrath of the lamb 3 days ago

    *space aliens (demons).*
    *the extraterrestrial invasion is very real. It is a bodily invasion (they take over the entire human being, the host). They are exactly parasitic, essentially consuming the substance of the host causing a physiological transformation. The parasitic demon can not be separated from the host.*