Mark and MrBeast talk about how they achieved YouTube fame, all the viral stunts they have pulled, working to help save the planet, their Team Seas project to raise $30 million to remove 30 million pounds of trash from the ocean, raising $10 million in just a few days, all the people who are interested in helping, and Jimmy helps the cause by buying two sweatshirts for $10,000. To learn more about the work they're doing go to teamseas.org. Watch Jimmy Kimmel Live! WEEKNIGHTS 11:35/10:35c on ABC. Stream on Hulu.