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:
    otago.ac.nz/parasitegroup/PDF%20papers/Poulin2014-IJP.pdf
    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
    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
    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
    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.12094cambridge.org/core/journals/journal-of-the-marine-biological-association-of-the-united-kingdom/article/biology-and-life-cycle-of-the-rhizocephala-cirripedia/11C2E47CABCABB175F4C49B1393BE125
    sciencedirect.com/science/article/pii/S138511011530037X
    nph.onlinelibrary.wiley.com/doi/pdf/10.1046/j.1469-8137.2002.00396.x
    harvardmagazine.com/2017/03/colossal-blossom
    bulbapedia.bulbagarden.net/wiki/Vileplume_(Pok%C3%A9mon)
    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
    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 • 1 399

  • SciShow
    SciShow   2 weeks back

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

    • John Boogmans
      John Boogmans  11 hours back

      You forgot a parasite there is also one which can swim upstream if you piss in the water its in it can go up in your pee hole and eats the inside

    • Desus Vult
      Desus Vult  1 weeks back

      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  1 weeks back

      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 weeks back

      @Władca Wymiaru

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

    • Władca Wymiaru
      Władca Wymiaru  2 weeks back

      @Gaurav Nema
      So WHAT it is?

  • Ryuhitsuya 21
    Ryuhitsuya 21  2 hours back

    Not the best video to eat lunch too

    • ebertmiriam
      ebertmiriam  3 hours back

      Don't fall for that evolution fairy tale - it doesn't explain parasite abilities. Darwinian macro-evolution was disproved when we learned to sequence DNA. It turns out that mutations are DNA copying errors, so MUTATIONS CANNOT INCREASE GENETIC INFORMATION. Thus a reptile cannot mutate (mis-copy) its scale DNA into feather DNA on the way to becoming a bird. (I.e. ten thousand small, random mistakes in copying the DNA recipe for making scales won't turn in into a DNA recipe for making feathers. And large mutations are fatal.) Use common sense.

      Of course micro-evolution (variations within a species) is a common occurrence, and explains how wolves gave rise to their cousins the coyotes, etc. They differ merely in minor details like size, shape and color. But that's a far cry from trying to explain how all the major differences between reptiles and birds could come about through DNA copying errors. Atheists are desperate to find a purely materialistic explanation for how all the different life forms arose from rocks, and they howl and scream when anyone challenges their pet theory - it's their religion. But don't mistake this for proof that they are right; if they were they wouldn't need to try to silence dissenters.

      • TheNefari
        TheNefari  6 hours back

        Assuming Control

        • GitGud
          GitGud  6 hours back

          Wait if the fish dies then what does the isopod do?

          • Янош Бан
            Янош Бан  6 hours back

            I just gonna say that clip on 8:07 has some great meme potential imo

            • Magritte René
              Magritte René  8 hours back

              What, people really think this corpse flower is beautiful? I always thought It is gross and ugly, way before I knew It was a parasite

              • : 3
                : 3  8 hours back

                What if those barnacles started to attach to humans that would be messed up

                • wingedguardian
                  wingedguardian  13 hours back

                  anyone else see the movie called the bay?
                  lots of fun.

                  • Mini Garrosh
                    Mini Garrosh  14 hours back

                    Parasites. Humans.

                    ... I'll leave the rest to you..

                    • Baron Daniel
                      Baron Daniel  16 hours back

                      This video makes me itchy

                      • A. N.
                        A. N.  17 hours back

                        children are obligate parasites, am I wrong?

                        • RTK Jzs
                          RTK Jzs  18 hours back

                          9:18 I think if those Barnacles infecting Mr Crab..it will Transform Mr Crab into Mrs Crab 😂😂😂

                          • KukksGamingCenter
                            KukksGamingCenter  19 hours back

                            Where is venom

                            • Cephalon IO
                              Cephalon IO  20 hours back

                              Genestealler !!!!

                              • Lps Evie
                                Lps Evie  21 hours back

                                Well I'm never going to the ocean/lake

                                • Raphael Rodriguez
                                  Raphael Rodriguez  24 hours back

                                  ARE YOU FEELING IT NOW MR/MRS.KRABS?

                                  • YELO_04
                                    YELO_04  1 days back

                                    They exist and thay are creepy so... Clickbait?

                                    • Z H
                                      Z H  1 days back

                                      My butthole is a parasite.

                                      • MC Mushroom
                                        MC Mushroom  1 days back

                                        He sounds like if Brian (theterroriser) was full american

                                        • Lord Freeza
                                          Lord Freeza  1 days back

                                          8:24 im not kidding one day I was swimming in the sea and I saw a crab with a black thing under it JUST LIKE THIS ONE and I thought they were eggs but it looks like it was that parasite

                                          • skippy weeko
                                            skippy weeko  1 days back

                                            I expected the number 1 entry to be my ex wife

                                            • The Void Alchemist
                                              The Void Alchemist  1 days back

                                              No word about dracunculiasis? Those f-ers haunt my dreams!

                                              • The Void Alchemist
                                                The Void Alchemist  1 days back

                                                I guess corticeps is old news at this point

                                                • Nein Nicht
                                                  Nein Nicht  1 days back

                                                  Its isopod hours

                                                  • Cristina Arguedas
                                                    Cristina Arguedas  1 days back

                                                    You for got the groupist workay who will land themselves into an unexpecting group of students and will gain all their grade recources, do nothing, and then leave once they have done

                                                    • Arturo Adam
                                                      Arturo Adam  1 days back

                                                      a parasite that is a master manipulator, oh you mean my exgirlfriend?

                                                      • T λ C O. phox
                                                        T λ C O. phox  2 days back

                                                        I hate everything about this. But equally intrigued too

                                                        • Death Omen
                                                          Death Omen  2 days back

                                                          The fish tongue isopod parasite inspired a movie. It's called The Bay. As if it's very existence did not justify being nightmare fuel already...

                                                          Edit: Oh my god I feel so bad for the infected crabs 😭 poor crabs

                                                          • Lemon
                                                            Lemon  2 days back

                                                            IS it just me or those this guy sounds like lester from GTA V?

                                                            • Delta Lima Bravo
                                                              Delta Lima Bravo  2 days back

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

                                                              • Korrie Rose
                                                                Korrie Rose  2 days back

                                                                Augh I cannot stand the tongue biting one

                                                                • Captain Srovy
                                                                  Captain Srovy  2 days back

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

                                                                  • Night Dreams
                                                                    Night Dreams  2 days back

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

                                                                    • Night Dreams
                                                                      Night Dreams  2 days back

                                                                      What if the isopod dies inside from the fish?

                                                                      • Austin Hall
                                                                        Austin Hall  3 days back

                                                                        Is anyone else itchy? Im itchy

                                                                        • John Red
                                                                          John Red  3 days back

                                                                          I have one of this tongue bitting isopods preserved.

                                                                          • White Blogger Black Specs

                                                                            Poor Mr. Krabs 🦀

                                                                            • Emma 669
                                                                              Emma 669  3 days back

                                                                              Why isn't my uncle on this list?

                                                                              • White Blogger Black Specs

                                                                                Humans are the worst parasite...

                                                                                • Fluid Mosaic
                                                                                  Fluid Mosaic  3 days back

                                                                                  Well that’s killed my libido

                                                                                  • Mad Rob
                                                                                    Mad Rob  3 days back

                                                                                    How about Necromorphs

                                                                                    • K Fox
                                                                                      K Fox  3 days back

                                                                                      What if WE’RE PARASITES?

                                                                                      • Sj W
                                                                                        Sj W  3 days back

                                                                                        trump = parasite

                                                                                        • SquidBoi ·
                                                                                          SquidBoi ·  3 days back

                                                                                          *Skullgirls would like to know your location*

                                                                                          • Aquilis Blasco
                                                                                            Aquilis Blasco  3 days back

                                                                                            How did you guys forget to mention cordyceps?

                                                                                            • DarkDove_
                                                                                              DarkDove_  4 days back

                                                                                              my flatmate is a parasite

                                                                                              • Walt Edwards
                                                                                                Walt Edwards  4 days back

                                                                                                Democrats