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 • 28 067

  • Mark Rober
    Mark Rober  Month ago +17725

    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.

    • koolaidrybot
      koolaidrybot 18 hours ago

      Do a rocket plane with help from Kevin

    • Brayden Robertson
      Brayden Robertson 19 hours ago


    • Kc12t
      Kc12t Day ago

      When the deodorant says “48 hrs”
      But you drink it in 10 mins

      we know you can’t drink deodorant ITS A JOKE so don’t make me put 1 of you on r/woooosh

    • Kc12t
      Kc12t Day ago

      Mark Rober no chance u see this but I watch you EVERYDAY the content is already great but it’s STILL getting,(play music) it’s natural talent.

    • endereye sullivan
      endereye sullivan 2 days ago +1

      Those kids are lucky i would never get near that it will be impossible till im a adult

  • Benjamin Moore
    Benjamin Moore 6 hours ago

    that looks awsome

  • The View Animations
    The View Animations 7 hours ago

    You should do a video with Michael Reeves

  • petting namjoon’s crabs :D

    Don’t play with your food, kids.

  • Fluffy Paws
    Fluffy Paws 9 hours ago +1

    😁 Please Do they glitter bomb package prank again instead of glitter use iching powder

  • Burrito pug
    Burrito pug 9 hours ago

    I would try to run across it

  • Luxurious
    Luxurious 10 hours ago

    No one:

    Literally NO ONE:

    Not a single soul:

    Dinosaur: Oh heheh hi i'm just gonna run past your fence!!Nothing much to see here now ta ta

  • Emily Doster
    Emily Doster 10 hours ago


  • Android Ken
    Android Ken 10 hours ago

    Mark, I told my son that you are the Mr. Wizard and Bill Nye of his generation. However, you might be closer to Beakman of Beakman's World. 😂 Regardless of which one you are, you are pure inspiration! Kids are going to grow up and say you are the whole reason they are scientists or engineers. 🚀

  • flat catcher
    flat catcher 10 hours ago

    People be like:The bucket list goes to the moon and back.
    Me: To Pluto and back lol.

  • netta suomi
    netta suomi 13 hours ago

    Am i the only who just pray for that one kid white shirt?

  • Hussain Tube
    Hussain Tube 15 hours ago


  • Joslyn Holden
    Joslyn Holden 16 hours ago

    Yes!! The office

  • Pikes Peak Jeep Rentals Maniak

    Can you pls do an experiment with shade balls

  • Andrea P
    Andrea P 19 hours ago

    55 gallon of trash!

  • iTz mE dORaAaA
    iTz mE dORaAaA 20 hours ago

    Those kids are having their best childhood memories with you

  • Iver Namsos
    Iver Namsos 20 hours ago

    6:02 grabbin that posssssy

  • Nikka Chua
    Nikka Chua 21 hour ago

    Super cool! 😁👌🏻

  • Mika Mirsham
    Mika Mirsham 22 hours ago

    Yummy 😋😋😋😋😋😋😋😋😋😋😋😋😋😋😋😋😋😋😋😋😋😋😋😋😋😋😋

  • it's it's anime playz

    Good job you have alot to clean 😂
    Edit: 9:51 you dead a !!!! *dies*

    (Not really)

  • YMS
    YMS Day ago

    Mark Rober,

    A question was presented to my crew and I involving orbital motions between planetary objects and their satellites in reference to revolution times. We are coming to a split decision as to whether who is "correct" and are hoping that you may be able to apply a solid scientific standard to identify which is fact; or who is "more" correct.

    The question presented was, "Given our earth, and referencing a satellite locked into a geostationary orbit, how long does it take for the satellite to complete one revolution around the earth?"

    We have come to two points of conclusion:

    1. That a satellite is in an orbit around the earth, regardless of whether it is a geostationary or not. It develops that orbit by creating a motion path that "encircles" the earth and therefore follows the rules for a geosynchronous orbit time which equates to one sidereal day(approx 23hr 56min 4sec) to complete a revolution around the earth. This argument is further supported by thinking of the satellite orbit based on the center mass point of the earth being a "single point" in space as the reference and that the satellite orbits that center mass point(point in space not in motion).
    This argument is countered with the logic that in order for the geostationary satellite to complete a revolution, its "stationary" position would have to be forgone and either the satellite itself must accelerate or decelerate in relation to the referenced point(earth) in order to complete its revolution; or vice-versa(earth accelerates/decelerates its rotation).
    2. Since we are using the earth as the reference point, that the "Geostationary" orbit locks the "0 degree" reference point with the satellite to the ground point and degree reference on earth and as such, a geostationary satellite cannot complete one revolution around earth.
    This argument is countered changing the point of view of the observer. If an observer is external to both the earth and it's geostationary satellite, it appears that the satellite will rotate around the earth(not accounting the earth's rotation)

    Please help, does a geostationary satellite complete a revolution around the earth? If so, how often?

    In the case that you make a video and If you can prove that a geostationary satellite does not make a revolution around the Earth, please say in your video, "Curtis Longoria, you owe 1st Squad Pizza" at some point towards the end.

  • Icy Lovette
    Icy Lovette Day ago

    Hard work makes a dream work

  • finallyanaccount

    One of the coolest things I've ever seen. Thank you!

  • Galaxy Girl
    Galaxy Girl Day ago

    8:11 That was my favorite episode omg.. 😂😂😂

  • Jeanne Lyday
    Jeanne Lyday Day ago


  • yungblud tbrum
    yungblud tbrum Day ago +1

    rip pool

  • yungblud tbrum
    yungblud tbrum Day ago

    rip pool

    MF DOOM Day ago

    Seeing the kids and simply knowing how thrilled I would have been as a kid really makes my day

  • Jack Mk. Gumber snaget

    The kid at 6:29 looks like a who

  • TheAsianGamer
    TheAsianGamer Day ago

    Congratulations! You made it into the OWL magazine with your skipping stone robot! :)

  • chris_dat_youngin._ Va shii

    Those kids Ruined it

  • Vinicius Medeiros

    Waiting for the next video Bro !


    When new vid it's been a month

  • Mariana Garcia
    Mariana Garcia Day ago

    A mam giving birth 7:04

  • Nita Vincent
    Nita Vincent Day ago

    You are gross eating it out a pool

  • Gavin's Clubhouse

    I like jelo

  • robert storey
    robert storey Day ago

    Wish it were beans :(

  • Reesa Rodriguez
    Reesa Rodriguez Day ago

    Wow! A lot of work went into this project.. 😭😜😉 PS it was satisfying

  • Comfortable Sofa

    Very nice upload schedule.

  • Parker Helsel
    Parker Helsel Day ago

    Who else is here waiting for this mounts upload

  • Raquel Riano
    Raquel Riano Day ago


  • Darcy C
    Darcy C Day ago

    My second question, totally unrelated, and I only ask it because you seem to have such creative ideas and the desire to figure things out (so I get it if you want to pass), and because I was having a fun conversation with my prepper mom the other day. You are going on a 600-mile trek on foot. You don't have to worry about food or water. Assuming that you are not getting help elsewhere, and knowing ahead of time that you are making the trek, you place small caches of supplies at intervals along your predetermined path. Assuming that you are going about 20 miles a day, at what interval would you place the caches? What items would you include in each cache? What material would your cache be made of so as to be impervious to extreme temperatures?

  • Darcy C
    Darcy C Day ago

    @Mark Rober, I've watched a few of your videos now, almost on accident, stumbling onto your videos because you answer questions I need answers to. :) Do you respond to questions from fans? Because I have two questions for you. 1. There is a lava tube cave in Washington state. It is about a mile and a half long. The terrain is rough, with few flat spots, multiple narrow spaces you have to crawl or climb through, and multiple piles of uneven boulders and rocks you have to scale to move forward. About halfway through the cave is an 8 ft lava fall that you have to get up, otherwise you have to turn back. There is 1 good foothold and few useful handholds. It's hard to use rope, as there are no obvious places to anchor it. Usually it takes at least 2 people to get up, and it really helps if one of those people is tall. The Parks people, probably for liability reasons, have not built in any helps for people to get up. If you were going on this hike, and it was just you, or you and a short person, how would you get up the fall? Carrying a ladder or other similar device would be exhausting, even if you left it behind once you got up. Using an inflatable step to get up could maybe work, but the ground is so rough and sharp, it would have to be strong enough not to pop under the weight of a person. I would love to hear any ideas you might have on this.

  • Łôßêr Kïm
    Łôßêr Kïm Day ago

    I wish I we're there

  • Rene Calderon
    Rene Calderon Day ago

    Ok while it was in the first part you should have walked on the water

  • twins
    twins Day ago +1

    This is on my bucket list

  • Cameron Shears
    Cameron Shears Day ago

    your shirt is op because mike tysons punch out is so dope

  • DJ p
    DJ p Day ago

    Hello oh you mean jelly speak England good

  • LionxD.J Lilysnowolf

    It looks fun!! If I did this, I would say it was worth it!

  • Muna Karim
    Muna Karim Day ago

    So good

  • Heather Klepp
    Heather Klepp Day ago

    This reminds me of phineas and ferb

  • WM trainiert
    WM trainiert Day ago +1

    Sorry, aber was ist das für eine Verschwendung ?

  • Vernon Law
    Vernon Law Day ago

    Hi what is your name?

  • Alexis Cruz
    Alexis Cruz Day ago +1

    What do you do with it after?

  • Lorena Aguico
    Lorena Aguico Day ago

    Can you walk on it

  • Deutsch rap Bass Boosted

    Bruh I wanna eat it

  • Mary Poppin’
    Mary Poppin’ Day ago

    *doesnt fall* I’m okay *falls*

  • Blaseeni
    Blaseeni Day ago

    Wonderful! Even now cannot realize I just made $5643 with this fantastic web site here

  • Nicole Miner
    Nicole Miner Day ago +1

    Am I the only on who would love to do that

  • Matt Sinke
    Matt Sinke Day ago

    I waited an hour for your video to load and I think your video is inspiring can I please get a shoutout

  • Dooglewo
    Dooglewo Day ago

    Mark i know this is british speak but what american equivalent of a GCSE did you take and how many?(thats like high school for you)

  • Markimus
    Markimus Day ago +1

    How many cows do you think died to fill this pool?

  • Kc12t
    Kc12t Day ago


  • Kc12t
    Kc12t Day ago

    Mark no chance u see this but I watch you EVERYDAY the content is already great but it’s STILL getting,(play music) it’s natural talent

  • Brilliani Ulya
    Brilliani Ulya Day ago

    It is so cool!

  • Mr Galaxy
    Mr Galaxy Day ago

    Dei hav didet in Norway on dont do dis hom but det you bild a biger ai em fron Norway

  • Jocelyn morales Morales

    How is your son doing btw I went to San Miguel with him


    Is it Eatable tho?

  • Shailesh shailesh
    Shailesh shailesh Day ago +1

    Is he also wok for NASA?

  • Sean Johansson
    Sean Johansson Day ago

    WOW, just WOW!!!! If I could, I'd com,e live by you in a tent for free just to see what you come up with :)

    MY FOOD MY CULTURE 2 days ago

    w0w amazing

  • princess kitty
    princess kitty 2 days ago

    uhhh is this photoshop?

  • DaMingWay
    DaMingWay 2 days ago

    Proper content

  • Nash1a
    Nash1a 2 days ago

    New fan!!!

  • Angelica Ramos
    Angelica Ramos 2 days ago


  • Marquis Palmer
    Marquis Palmer 2 days ago

    This is what happens when smart people win the lottery

  • Heather Gamble
    Heather Gamble 2 days ago

    Wat if somebody peed in the pool

  • CreeperBoy
    CreeperBoy 2 days ago

    I watched unspeakable do this and he failed but you did it you should get a reward

  • Lisa's cat from Blackpink

    I love that Juarrasic Park reference you did 😂😂😂😂😂😂

  • Ben Matthew
    Ben Matthew 2 days ago +1

    Who what’s to do that

  • thomas hardin
    thomas hardin 2 days ago

    9:30 🤘💃🏽💀😉😎📡

  • OoGa bOoGa ToOgA gOoGa

    You know how cool it would be to be part of this guy's family or even just know him

  • O.M.F Bless Up
    O.M.F Bless Up 2 days ago

    We Can’t Go To The Moon

  • Bridget Tuft
    Bridget Tuft 2 days ago

    Just get a huge oven and boil
    Obviously.... then get a huge refrigerator... yea so... do that *but were u gunna find big stuf?* some guy said well some guy... shut

  • Rachel
    Rachel 2 days ago

    Pool of cool whip!

  • ViperNate YT
    ViperNate YT 2 days ago +1

    6 months?😂

  • Prisha Naik
    Prisha Naik 2 days ago +1

    Why did he wear a hat in the pool😂

  • David Staneart
    David Staneart 2 days ago

    Steve Smith has entered the chat

  • Sagar Thakur
    Sagar Thakur 2 days ago

    I appreciate this guys work. I mean how much effort he put into his videos🎥🎥

  • Když Mikasa Hraje
    Když Mikasa Hraje 2 days ago

    Hey man , it's looking awesome

  • Kat The wolf
    Kat The wolf 2 days ago

    I’m just imagining all the flys and bees and how sticky they were after

  • Marvel fan Number one
    Marvel fan Number one 2 days ago +1

    I wanna eat it so bad

  • Andy Stroman
    Andy Stroman 2 days ago +1

    Mark Rober!!! You are seriously the COOLEST GUY!!!!!!!!

  • Taylor and tenley Kajmowicz

    Good job 😃

  • TheKnightMan Freeze!!!!!!

    collab with mrbeast mark

  • Jayrome Babag
    Jayrome Babag 2 days ago

    This fun and all, but i just remembered the "how much pee is in a pool" episode.

  • Димитар Стојаноски

    Can you make a gun that shots paper balls

  • luke vigorito
    luke vigorito 2 days ago

    I am pooping

  • Ninja
    Ninja 2 days ago

    Hey Mark! Is it possible to make Hot Ice like a hot ice cube pr something?

  • Elijah Cabahug
    Elijah Cabahug 2 days ago

    Gabe sili unspekable haha