Watch Shark Tank Online - Full Episodes

Shark Tank is an American reality TV show that began its original run in August 2009 and was renewed for a fourth season in May 2012. It is the U.S. version of the popular worldwide television show Dragons' Den, which originated in Japan and now has versions in dozens of other countries, including Canada, Australia, the United Kingdom and Sweden.

In all countries, the show focuses on a series of contestants who believe they have come up with a profitable product or business idea but need money to fund it. They can pitch their idea on the show to a group of entrepreneurial businesspeople, known as the "sharks" in the U.S. version. The sharks then question the contestant about their product to determine if it would be a good product to invest their money in. The contestants have a set amount of money they wish to raise for their product, and if they cannot raise that much, they get nothing. However, if they can persuade the sharks to provide the money they need, the invested sharks then get a percentage of the company's stock in return.

Four sharks have been on all three seasons of Shark Tank, with a few others being in only one or two seasons. The main four are IT security firm owner Robert Herjavec, real estate millionaire Barbara Corcoran, former president of The Learning Company Kevin O'Leary, and FUBU founder Daymond John. Currently the shark panel also includes Mark Cuban, billionaire owner of the Dallas Mavericks, who replaced business executive Kevin Harrington on the show. In season two, comedian Jeff Foxworthy was also one of the sharks.