Andrew Feld, the founder of Fresh Patch, saw the need for better training methods for dog owners without backyards.
Students Anna Stork and Andrea Sreshta came up with the bright idea of inflatable solar lights to help with disaster relief efforts.
Ben and Ariel Zvaifler brought PupBox, a subscription service that delivers training products to new dog owners, to "Shark Tank."
In the CNBC original documentary "The Profit: My Roots," Marcus Lemonis travels to Lebanon for the first time since his adoption from a Beirut orphanage.
The founders of PhoneSoap, a company that sells cell phone chargers designed to sanitize phones while they charge, pitch to "Shark Tank."
Former NFL player Chris Gronkowski has traded his football jersey for entrepreneurship. On "Shark Tank," Gronkowski asked for $100,000 in exchange for a 10 percent stake in his company Ice Shaker.
On "Shark Tank," Geoffrey Woo and Michael Brandt, co-founders of HVMN (formerly known as Nootrobox), requested $2 million in exchange for a 5 percent stake in their business – one of the most expensive in "Shark Tank" history. The entrepreneurs have made some changes to their business since their TV debut.
John Tabis, CEO and founder of The Bouqs Company, made it his mission to revolutionize the way people celebrate — with a farm-to-table online flower delivery service. On "Shark Tank" he requested $258,000 in exchange for a 3 percent stake.
Billy Thompson and Randy Choi are the entrepreneurs behind Thompson Tee, a clothing business that sells sweatproof apparel. On "Shark Tank" they requested $700,000 in exchange for a 7 percent stake in their company.
The founder of Psi Bands tries to land funding for her stylish nausea-relief wrist bands.