offer, has the potential to significantly boost sales for companies. Some entrepreneurs have reported 10- to 20-fold increases in daily revenues after the show's airing. Cast Sharks Two of the show's longstanding sharks, Robert Herjavec and Kevin O'Leary, are Canadian entrepreneurs who had previously appeared on the Canadian version of Dragons' Den. Notable companies Some notable companies that have appeared on Shark Tank include: Bombas Breathometer Coffee Meets Bagel Doorbot, now known as Ring (acquired by Amazon) – first entrepreneur to appear as a (Guest) Shark Kodiak Cakes (did not reach a deal) Scan (acquired by Snapchat) Scrub Daddy Groove Book (acquired by Shutterfly) Talbott Teas (acquired by Jamba Juice) Manscaped Plated (acquired by Albertsons) Moki DoorStep Due to show popularity, companies have falsely advertised that they've appeared on Shark Tank when the air rate is 0.22% (88 aired of 40,000 applicants for 2018 season). A full list of companies that actually appeared on Shark Tank can be found on ABC's website, with cult following websites such as AllSharkTankProducts.com, SharkTankContestant.com, Sharkalytics.com, and SharkTankTales.com documenting details and products for all companies, and Gazette Review documenting episode recaps and updates on what happened "after Shark Tank". Episodes Timeline Early seasons (2009–2013) Shark Tank premiered in August 2009 and aired 14 episodes through January 2010. In August, it was renewed for a second season. Season 2 premiered with a "sneak peek" episode on Sunday, March 20, 2011, before resuming its regular Friday night time slot on March 25, 2011. Season 2 had 9 episodes, 5 of them featuring new panel members. Comedian Jeff Foxworthy and Mark Cuban replaced panel member Kevin Harrington in those episodes. In season 2, Kevin O'Leary, Barbara Corcoran, Daymond John, and Robert Herjavec appeared in all nine episodes; Harrington appeared in four, Cuban in three, and Foxworthy in two. Shark Tank third season premiered in January 2012. From the third season, Kevin Harrington was replaced by Mark Cuban, while the "queen of QVC" Lori Greiner replaced Barbara Corcoran on 4 episodes. Kevin O'Leary, Daymond John, Robert Herjavec, and Mark Cuban appeared in all 15 episodes of season three. In February, ABC ordered two additional episodes for season 3 using unaired footage, which brought the season's episode total to 15. On May 10, 2012, Shark Tank was renewed for a fourth season consisting of 26 episodes. This is the first time the series received a full season order. Filming began