Watch the Shark Tank season finale FRIDAY MAY 15 8|7c and watch a sneak peek from the episode above! Billionaire Nick Woodman, founder and CEO of GoPro, returns to the Tank as a guest Shark for an episode where one entrepreneur claims to have literally reinvented the wheel. There will also be a special recap of all of the success stories from season 6, and a look at some of the successful businesses that have built and nurtured by the Sharks this year.

First Lady Michelle Obama celebrates small business entrepreneurs on Season 6 of Shark Tank.

The Sharks in this episode of “Shark Tank” are Mark Cuban, Lori Greiner, Daymond John, Kevin O’Leary, and guest Nick Woodman.

The Lake Forest, CA, folks who claim to have improved the 5,000-year-old wheel say their model rolls faster with more grip. They show the sharks their new model in action on skateboards and strollers, but not all of the Sharks are convinced. A cat lover from Boca Raton, FL, hopes to find the purr-fect partner to invest in her idea where patrons can enjoy adorable rescue cats while relaxing at a café; a toy designer from Mountain View, CA, has an all-electric compact vehicle that merges the thrill of a motorcycle with an added degree of maneuverability; and an entrepreneur from Chicago, IL, touts the fasting growing new sport to hit America, a combo of volleyball and foursquare.

Watch Shark Tank FRIDAYS 9|8c on ABC.