World's LARGEST JELLO POOL- Can you swim in Jello?

  • Published on May 16, 2019
  • I've wanted to make this video waaay before I ever knew how to make videos. Go to and use code MARKROBER to get 75% off a 3 year plan and an extra month for free.
    Thanks to Devin Super Tramp for filming all the coolest parts of this video. Go subscribe to his channel and tell him I sent you!

    High Speed camera courtesy of They rent high speed cameras at killer prices. Hit them up.
    0:03 - Arrow - Andrew Applepie
    0:31 - Cereal Killa - Blue Wednesday
    2:14 - Run (Part 2) - Andrew Applepie
    3:58 - Arrow - Andrew Applepie
    4:39 - Sappheiros - Falling (ft eSoreni)
    5:22 - Pokemon in NYC ft Missy - Andrew Applepie
    7:24 - New Shoes - Blue Wednesday
    8:02 - Inspiring Cinematic Trailer in
    8:21 - Arrow - Andrew Applepie
    8:36 - Pata Pata - Matt Chene-
    10:08 - Q - Blue Wednesday
    11:09 - Too Happy to be cool by Notebreak

    Summary: Since I was a little kid I always wondered what it would be like to swim in a pool of Jello. Turns out it is really difficult. We heated up the Gelatin in 55 gallon drums and then used gravity to put that jello into the pool.

    They are soft-

    I make videos like this once a month all year long while supplies last:
  • Science & TechnologyScience & Technology

Comments • 27 950

  • Mark Rober
    Mark Rober  Month ago +17639

    My bucket list is now one item shorter. This was a brutal amount of work but a worthy engineering challenge. MASSIVE thanks to my buddy Devin Super Tramp for filming this so don't get used to this high quality from me. He is a living legend.

  • Angel Camacho
    Angel Camacho Day ago


  • Angel Camacho
    Angel Camacho Day ago

    Please come back

  • Eli Ropp
    Eli Ropp Day ago

    thats cool man

  • Spartan40
    Spartan40 Day ago

    seems so disgusting and frivolous, weird why someone would seriously want this. Clicked but wasn't interesting enough to watch in full

  • Des
    Des Day ago +2

    0:14 UNSPEAKABLE!!!
    You should leave a like if you watch unspeakabe/like him :)

  • Nick M
    Nick M Day ago

    It’s the Red Sea

  • Abby Grace
    Abby Grace Day ago

    Who else skips all the science stuff and goes straight to the final product

  • Ariella JocelynF

    Mark rober
    Mark rober
    Mark rober
    Mark rober

  • Paky
    Paky Day ago

    You hhad to tell these kids that the actually swimm in bunch of dead pids kek

  • Satvik Garg
    Satvik Garg Day ago

    Hey Mark, I am in grade 11 and i am looking for a end of the year engineering project and i am wondering if you had any ideas or suggestions on something i could make or work on. First i was planning on making a drone out of 3d printed parts but as i browsed the parts for the project it just exceeded my limit for how expensive it could be. So if you have ideas or suggestions please let me know either through direct message or replying to this.
    Thank you!!

  • 10억
    10억 Day ago +1

    저건 어찌 처리할까;; 걱정이다

  • Sylvia Horsechief

    love the video

  • Sebastian Mikkelsen

    Thanks Mark Rober, for spoiling "the office" for me

  • Maria
    Maria Day ago

    This is so cool.

  • Logan vlogs
    Logan vlogs Day ago

    Don't hate on unspeakable. He makes better videos anyways

  • Alain Lopez
    Alain Lopez Day ago

    Dude that was epic those kids must have had a blast a memory of a lifetime

  • T r
    T r Day ago

    Can you Build a drone? Under $100

  • Jabbster11
    Jabbster11 Day ago

    You’re an absolute legend mate. 👏🏻👏🏻👏🏻👏🏻

  • poojitha borra
    poojitha borra Day ago

    You are the coolest uncle ever....
    I feel happy, just watching that. The amount of knowledge you possess and the way you implement your ideas is awesome. You inspire me Mark

  • Bro Gamer
    Bro Gamer Day ago

    You and your brother is such a Intelligent

  • ricar doroy
    ricar doroy Day ago

    Is he an mechanical engineer?

  • Damaris Garza
    Damaris Garza Day ago +1

    Hey mark I was wondering if the earth was flat

  • mylife suck!!
    mylife suck!! Day ago

    I wont a new vedio

  • Zac’s Google Account

    I imagine that’s what it’s like to phase through something

  • I Have No Name
    I Have No Name Day ago +1

    Who else like watching these kinds of video without actually doing it?

  • Joy Libbinson
    Joy Libbinson Day ago

    This video pleases me *greatly.*

  • Nintendo Games
    Nintendo Games Day ago

    Holy crap I've never seen that and it looks so sadafiing

  • Krizzy
    Krizzy Day ago +1

    6 months of work and no ads.... Truly remarkable

  • Cow Gaming
    Cow Gaming Day ago

    My whole child hood dream is in this video.

  • Dante Harris
    Dante Harris Day ago

    Scratch sugar just bones

  • Dante Harris
    Dante Harris Day ago

    I’m scared, considering that he’s swimming in a pool of bones and sugar

  • S.Z.V S.Z.V
    S.Z.V S.Z.V Day ago

    So how was the cleaning process?😭

  • Academy of the Yesterday’s

    SCIENCE it’s a next level

  • Juliana Bezerra
    Juliana Bezerra Day ago

    Eu tô apaixonada é nesse ambiente... Que casa mais perfeita ❤

  • Axl Mizzi
    Axl Mizzi Day ago

    You are cutting it close and we are hanging out for the next video. Love your work

  • Abhinav Sandiman
    Abhinav Sandiman Day ago +1

    You are most coolest youtuber i have ever seen.

  • Benj will
    Benj will Day ago +1

    The coolest uncle :(

  • Samantha Speaks
    Samantha Speaks 2 days ago

    Dude this is awesome!!!

  • Emily Fogerty
    Emily Fogerty 2 days ago

    This is AWESOME! I want to recreate this someday (and I love science so I'd probably enjoy it)

  • Ella MSP
    Ella MSP 2 days ago

    I would be the kid to eat it lol

  • Ashton Shrock
    Ashton Shrock 2 days ago

    Thank you. I've literally wondered what this would be like since I saw cloudy with a chance of meatballs 😅

  • Xiadani Pérez
    Xiadani Pérez 2 days ago

    Man this is crazy

  • Isabelle Luisa Barrett Rocha

    Eu sou do Brasil eu tenho certeza que você não vai entender o que tá escrito aqui mas como você não vai conseguir ler o que tá escrito aqui escreve o que tá escrito nesse comentário no tradutor você vai saber o que tá escrito Esse vídeo foi bem legal eu gostei mas eu não entendi o que você falou Não entendi os comentários que estavam escritos porque eu sou do Brasil né eu fico me perguntando como que você vai entender que tá escrito pesquisa o que eu falei no tradutor se você nem sabe ler em Português

  • Abigail BONDZI
    Abigail BONDZI 2 days ago

    That was so amazing!!!😮😮😮😀😀😀😀

  • Ashleytheunicorn Fan!

    If you did a blue one you could stand on it and take a video saying I’m standing on water

  • VegLad
    VegLad 2 days ago

    if you think about it, he is really swimming in a pool of bones and skin.

  • William Cassidy
    William Cassidy 2 days ago

    can you eat it still

  • Elizabeth Wright
    Elizabeth Wright 2 days ago +1

    Why didn’t Mr.Beast think of this

  • Alex Midgley
    Alex Midgley 2 days ago

    What of someome peed in this pool

  • •kittycat Playz•

    How come no one ate it?

  • Conner Malone
    Conner Malone 2 days ago

    this isnot jime

  • Truegaming
    Truegaming 2 days ago

    Congratulations you rly worked hard fornit

  • かわいいねこ
    かわいいねこ 2 days ago

    What if it rained

  • thecapinater17 SOSO
    thecapinater17 SOSO 2 days ago

    that is the definition of a good child hood!!!

  • Paige Perricone
    Paige Perricone 2 days ago

    Ruined. I WANT TO EAT IT!!!

  • Andro
    Andro 2 days ago

    9:16 my mom walked in and thought it was a pool of blood
    I'm dying lmaoo

  • Flubbernugget 64
    Flubbernugget 64 2 days ago

    For your next video make a giant air hockey table

  • Maestro Alumno
    Maestro Alumno 2 days ago +1

    ¿Esto es sano?

  • Mario Velazquez
    Mario Velazquez 2 days ago

    Now, how do you clean it up

  • LianJie's Stuff
    LianJie's Stuff 2 days ago

    Aww I’m hungry for jelly now xd

  • billkar460 tv
    billkar460 tv 2 days ago +1

    very useful

  • Wizzy _S
    Wizzy _S 2 days ago

    1:03 jcb ki khudai

  • Cmac D
    Cmac D 2 days ago

    Dude, I think you’re already the favorite uncle!

  • Enjoy All
    Enjoy All 2 days ago

    Good luck with the cleaning

  • Pranav Saini
    Pranav Saini 2 days ago

    Hey make a scooba diving electric or fuel powered board like those of water skating etc

  • Jacob Curran
    Jacob Curran 2 days ago

    You should make a pool of oobleck now, it would be easier (i think)

  • Samantha Owens
    Samantha Owens 2 days ago

    Omg this is now on my bucket list

  • Luise Qualmann
    Luise Qualmann 2 days ago +1

    That looks like watermelon!

  • George Bowkett
    George Bowkett 2 days ago

    Do you work on the Ellen show

  • Gwen stacy
    Gwen stacy 2 days ago

    Your really lucky to have a uncle like mark

  • BBQ Boy
    BBQ Boy 2 days ago

    100% some kid peed in that

  • Immaa Bananaa
    Immaa Bananaa 2 days ago

    Where does your brother live? I wanna move there

  • Milla Stone
    Milla Stone 2 days ago

    I wish I had that pool

    * dying inside ☹️

    PACKERFAN53 2 days ago

    rip hat when you went in

  • Nobody
    Nobody 2 days ago +1

    Flint lockwood is shook

  • MetrixPlayz !
    MetrixPlayz ! 2 days ago +1

    *Mark Rober solves World Hunger more on the story as it develops..*

  • Emily Magyar
    Emily Magyar 2 days ago

    I want this

  • my puppy N my puppy N

    Its not the first

  • mike lachney
    mike lachney 2 days ago

    You did it you have just made my childhood dreams

  • RTL Ella
    RTL Ella 2 days ago

    Omg “Jim and Pam”

  • 서명언
    서명언 2 days ago

    환경 문제....

  • Jesse James
    Jesse James 2 days ago

    It’s like cloudy with a chance of meatballs

  • DeezDeez History
    DeezDeez History 3 days ago

    Koro Sensei still likes this video

  • •ᴄᴏᴏᴋɪᴇᴄʀᴇᴀᴍsᴡɪʀʟ •

    *science wants to know your location*

  • Mangoonthemoon L
    Mangoonthemoon L 3 days ago

    2 more videos spend it wisely!

  • Kat • M
    Kat • M 3 days ago

    *I’m jealous...*

  • SirMeowMeowChow Dragon Master


    30 year old: how do i use a slip and slide


  • Keyton Squad
    Keyton Squad 3 days ago

    Omg he spent so long doing science and hard only to let his brothers friends play in it and he only got to play in it when it wasn’t hard like hello

  • Bowgartgamer12345678 My Singing Monsters

    Nice job!!!! :)

  • Grenadedude
    Grenadedude 3 days ago

    R.I.P electricity bill

  • Enrique Hernández Poblete

    Great, as always, Mark

  • sus n
    sus n 3 days ago

    It's not real if it dose not taste good

    • Fupalishous
      Fupalishous 2 days ago

      sus n it’s does

    • sus n
      sus n 2 days ago

      @Fupalishous why did you write its it is it's get it right

    • Fupalishous
      Fupalishous 2 days ago

      sus n wow, autism at its finest.

    • sus n
      sus n 2 days ago

      You spelt it wrong

    • Fupalishous
      Fupalishous 2 days ago


  • Super whatever gamin'

    TVclip, I didn't ask for this...
    That being said, I'm here now. And I have no regrets

  • Mathew Martinez
    Mathew Martinez 3 days ago

    This is awesome

  • Dycie Leishman
    Dycie Leishman 3 days ago

    Wow 😮

  • Lisa Granger
    Lisa Granger 3 days ago

    That’s soo satisfying !!!❤️😅😂❤️

  • Andrej 500
    Andrej 500 3 days ago

    How did you empty that pool JESUS