4 Parasites Too Creepy to Exist

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  • Published: 12 August 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 • 1 363

  • SciShow
    SciShow   11 дней назад

    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  5 дней назад

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

      • 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.

        • Gaurav Nema
          Gaurav Nema  9 дней назад

          @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  9 дней назад

            @Gaurav Nema So WHAT it is?

            • Gaurav Nema
              Gaurav Nema  9 дней назад

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

              • Delta Lima Bravo
                Delta Lima Bravo  12 часов назад

                “4 parasites too creepy to exist”????? The title is a little silly considering they DO exist. Right?

                • Korrie Rose
                  Korrie Rose  15 часов назад

                  Augh I cannot stand the tongue biting one

                  • Captain Srovy
                    Captain Srovy  15 часов назад

                    Ads are also parasites! (ノ`Д´)ノ彡┻━┻

                    • Night Dreams
                      Night Dreams  16 часов назад

                      Was the flowers made and thought it should be the demo goth on from stranger things

                      • Night Dreams
                        Night Dreams  16 часов назад

                        What if the isopod dies inside from the fish?

                        • Austin Hall
                          Austin Hall  18 часов назад

                          Is anyone else itchy? Im itchy

                          • John Red
                            John Red  День назад

                            I have one of this tongue bitting isopods preserved.

                            • White Blogger Black Specs
                              White Blogger Black Specs  День назад

                              Poor Mr. Krabs 🦀

                              • Emma 669
                                Emma 669  День назад

                                Why isn't my uncle on this list?

                                • White Blogger Black Specs
                                  White Blogger Black Specs  День назад

                                  Humans are the worst parasite...

                                  • Fluid Mosaic
                                    Fluid Mosaic  День назад

                                    Well that’s killed my libido

                                    • Mad Rob
                                      Mad Rob  День назад

                                      How about Necromorphs

                                      • K Fox
                                        K Fox  День назад

                                        What if WE’RE PARASITES?

                                        • Sj W
                                          Sj W  День назад

                                          trump = parasite

                                          • SquidBoi ·
                                            SquidBoi ·  День назад

                                            *Skullgirls would like to know your location*

                                            • Aquilis Blasco
                                              Aquilis Blasco  День назад

                                              How did you guys forget to mention cordyceps?

                                              • DarkDove_
                                                DarkDove_  2 дня назад

                                                my flatmate is a parasite

                                                • Walt Edwards
                                                  Walt Edwards  2 дня назад

                                                  Democrats

                                                  • Haze87x
                                                    Haze87x  3 дня назад

                                                    #1 is disgusting

                                                    • TheWisestDwarf99
                                                      TheWisestDwarf99  3 дня назад

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

                                                      • Peterson A
                                                        Peterson A  3 дня назад

                                                        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  4 дня назад

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

                                                          • Tammy Rossitto
                                                            Tammy Rossitto  4 дня назад

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

                                                            • Nor Adrenalin
                                                              Nor Adrenalin  4 дня назад

                                                              Gene Stealers?!? Someone get the Ordo Xenos!

                                                              • Björn Caldersparr
                                                                Björn Caldersparr  4 дня назад

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

                                                                • dieubermensch
                                                                  dieubermensch  4 дня назад

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

                                                                  • Shataki
                                                                    Shataki  4 дня назад

                                                                    My stomach doesn't feel good now...

                                                                    • Kouta Takanashi
                                                                      Kouta Takanashi  4 дня назад

                                                                      I sure love watching scientific videos while cooking and eating

                                                                      • Rigging Doctor
                                                                        Rigging Doctor  5 дней назад

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

                                                                        • Kingdom Farts
                                                                          Kingdom Farts  5 дней назад

                                                                          Corpse flowers are fugly tho...

                                                                          • ToMiCo 91
                                                                            ToMiCo 91  5 дней назад

                                                                            Humans are a parasite of Earth.

                                                                            • Anthony Green
                                                                              Anthony Green  5 дней назад

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

                                                                              • Nill Gddy
                                                                                Nill Gddy  5 дней назад

                                                                                you forgot about illegal immigrants from mexico.

                                                                                • Bethanie Petitpas
                                                                                  Bethanie Petitpas  6 дней назад

                                                                                  "But wait -it gets worse!"

                                                                                  • Itwilsonboiii
                                                                                    Itwilsonboiii  6 дней назад

                                                                                    You forget mushrooms on ant

                                                                                    • Dan Jumash
                                                                                      Dan Jumash  6 дней назад

                                                                                      Hmm wtf 101?

                                                                                      • Imran Shishir
                                                                                        Imran Shishir  6 дней назад

                                                                                        Holy hell!

                                                                                        • Ray Chang
                                                                                          Ray Chang  7 дней назад

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

                                                                                          • Rebeça Sabourin
                                                                                            Rebeça Sabourin  7 дней назад

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

                                                                                            • Myk3sr vLogz
                                                                                              Myk3sr vLogz  7 дней назад

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

                                                                                              • Emily Turner
                                                                                                Emily Turner  7 дней назад

                                                                                                Aren't foetuses basically parasites?

                                                                                                • Nor Adrenalin
                                                                                                  Nor Adrenalin  3 дня назад

                                                                                                  @Emily Turner Well you're welcome ^^

                                                                                                  • Emily Turner
                                                                                                    Emily Turner  4 дня назад

                                                                                                    @Nor Adrenalin oh yh 😂

                                                                                                    • Nor Adrenalin
                                                                                                      Nor Adrenalin  4 дня назад

                                                                                                      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  7 дней назад

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

                                                                                                        • LeatherNeck 1833
                                                                                                          LeatherNeck 1833  7 дней назад

                                                                                                          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  8 дней назад

                                                                                                            No. 1: My kid

                                                                                                            • DahliasDarkside
                                                                                                              DahliasDarkside  8 дней назад

                                                                                                              Go Vileplum! OH GOD U SMELL AWFUL

                                                                                                              • Leah Rose
                                                                                                                Leah Rose  8 дней назад

                                                                                                                To my surprise, landlords are not on this list

                                                                                                                • Kep Spark
                                                                                                                  Kep Spark  8 дней назад

                                                                                                                  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  8 дней назад

                                                                                                                    More parasites, please! :D

                                                                                                                    • its just luke Revive
                                                                                                                      its just luke Revive  8 дней назад

                                                                                                                      Those poor unfortunate souls! 🐙

                                                                                                                      • Gajanan Nigade
                                                                                                                        Gajanan Nigade  8 дней назад

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

                                                                                                                        • Gajanan Nigade
                                                                                                                          Gajanan Nigade  8 дней назад

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

                                                                                                                          • Philippecr
                                                                                                                            Philippecr  8 дней назад

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

                                                                                                                            • Dave Blane
                                                                                                                              Dave Blane  8 дней назад

                                                                                                                              why all the arm-waving???

                                                                                                                              • Ron B
                                                                                                                                Ron B  8 дней назад

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

                                                                                                                                • Homer's Iliad
                                                                                                                                  Homer's Iliad  8 дней назад

                                                                                                                                  Be honest hank, do you watch College Humor?

                                                                                                                                  • Matthew Califana
                                                                                                                                    Matthew Califana  9 дней назад

                                                                                                                                    I heared it thru the grape vine .

                                                                                                                                    • Mark Ash
                                                                                                                                      Mark Ash  9 дней назад

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

                                                                                                                                      • Matthew Califana
                                                                                                                                        Matthew Califana  9 дней назад

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

                                                                                                                                        • Drakilicious
                                                                                                                                          Drakilicious  9 дней назад

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

                                                                                                                                          • El Fin
                                                                                                                                            El Fin  9 дней назад

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

                                                                                                                                            • Sylvain Piche
                                                                                                                                              Sylvain Piche  9 дней назад

                                                                                                                                              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  9 дней назад

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

                                                                                                                                                • Drevas777
                                                                                                                                                  Drevas777  9 дней назад

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

                                                                                                                                                  • Nor Adrenalin
                                                                                                                                                    Nor Adrenalin  4 дня назад

                                                                                                                                                    Forking Nids

                                                                                                                                                    • Ask to seduce Miss
                                                                                                                                                      Ask to seduce Miss  9 дней назад

                                                                                                                                                      Let see, psychopath and narcissist.

                                                                                                                                                      • sonny lee
                                                                                                                                                        sonny lee  9 дней назад

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

                                                                                                                                                        • James Carmody
                                                                                                                                                          James Carmody  9 дней назад

                                                                                                                                                          Disliked for the misleading title; loved the video otherwise!

                                                                                                                                                          • Ask to seduce Miss
                                                                                                                                                            Ask to seduce Miss  9 дней назад

                                                                                                                                                            I heard this through the Grapevine

                                                                                                                                                            • Robeela Khan
                                                                                                                                                              Robeela Khan  9 дней назад

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

                                                                                                                                                              • Alex Mercer
                                                                                                                                                                Alex Mercer  9 дней назад

                                                                                                                                                                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  9 дней назад

                                                                                                                                                                  Fun fact: barnacles are crustraceans, just like crabs

                                                                                                                                                                  • James Matskogv
                                                                                                                                                                    James Matskogv  9 дней назад

                                                                                                                                                                    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  9 дней назад

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

                                                                                                                                                                      • Sarah Morton
                                                                                                                                                                        Sarah Morton  9 дней назад

                                                                                                                                                                        I volunteer to go to mars

                                                                                                                                                                        • Fineapple Qveen
                                                                                                                                                                          Fineapple Qveen  9 дней назад

                                                                                                                                                                          You forgot to mention my ex...

                                                                                                                                                                          • Finn Beruldsen
                                                                                                                                                                            Finn Beruldsen  10 дней назад

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