This Is Mark Rober S1 E4 - Swimming in Orbeez

This Is Mark Rober

This Is Mark Rober S1 E4 - Swimming in Orbeez
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Mark helps viewers dive into three pools; one is filled with 25 million Orbeez, one is filled with liquid sand and one is filled with jello; he unveils a never-before-seen, top-secret blaster.