Shark Tank is the American adaptation of the British TV show Dragons' Den.
The American programme uses the same central format: entrepreneurs present companies or products to a panel of wealthy investors and seek capital in exchange for equity. The investors are called sharks rather than dragons, reflecting the title change used for the United States market.
Shark Tank premiered on ABC in 2009. Its panel has included investors such as Mark Cuban, Barbara Corcoran, Kevin O'Leary, Daymond John, Robert Herjavec and Lori Greiner. The cast has changed over time, but the pitch-and-negotiation structure has remained recognisable.
The two shows are related but are not identical broadcasts of the same episodes. Each country selects its own entrepreneurs, investors and production style. Shark Tank should also not be confused with Beyond the Tank, a companion series that follows businesses after their pitches.