World's Largest Jello Pool- Can you swim in Jello?

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:


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TWITTER: #!/MarkRober

INSTAGRAM: markrober


  1. Joe 06

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    you look like murr

  2. Caroline H Rosenfeldt

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    PHANTOM ROBLOXPrije 2 sati


  4. yaoitier

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    Theres actually a gelo that dont need hot water

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    Seeing this makes me ant to do this

  8. Thom Laursen

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    Cool, I just need to know how you cleaned it up?

  9. 𝕃inc For Lyfe_YT

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    What's with the Dino?

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    Can you eat it

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    Next month's video: "The Cleaning Process!"

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    The dinosaur though!!

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    I want to see what will happen if you jump into it

  51. Jace Guiliano

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    thinking about how much pork went into this

  52. Ken Smith

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    9:30 Hello Clarice...

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  58. LPS Frosty Fields

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    I guess you could say Phineas and Ferb are definitely JELLY of this one.. no?

  59. LPS Frosty Fields

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    2:08 missed opportunity to say, “Our goal was to have a jelly pool party in his backyard that would make even Phineas and Ferb ‘jelly’ of.”

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  64. Brian Simpson

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    have to wonder... how do you get rid of thousands of cubic feet of gelatin afterward? Same thing for the orbeez. You can't just dump the stuff down the drain or into a trashcan. Every time I see one of these wacky experiments with people making truckloads of orbeez or filling a house with ball-pit balls, what do you do afterwards?

  65. MiniBeast™

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    Fun Fact: Mark Rober quit NASA to make these videos for us😘 Thanks Mark❤️

  66. MiniBeast™

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  67. Rebecca Barney

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    The real question is,is it edible?

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  70. Ahmad Owaied

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  71. ابو عزوز٢ الشهري

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  72. Brandon Miller

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    Congrats on 19M Mark😃😝😇🤑🥳

  73. Ellie.Gachaz

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  74. Logan Studios

    Logan StudiosPrije 5 dana

    ok now make a oobleck pool

  75. Jaxøn

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    I’ve learned more from Mark than sch00l

  76. SkywardEagleLeo

    SkywardEagleLeoPrije 5 dana

    Oh I just realized that at the end of the video the reference is from jurassic park.

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  99. King Pistachion

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    You copied it from Phineas and Ferb. How original This comment is an obvious joke