The American adaptation of the British business show Dragon's Den is called Shark Tank.
Shark Tank premiered in the United States in 2009 and uses the same central idea: entrepreneurs present businesses to wealthy investors and seek capital in return for equity. The American title changes the animal metaphor from dragons to sharks, but the negotiation-based structure remains recognisable.
The Apprentice, The Profit and Pawn Stars are also American programmes involving business or commerce, but they are not the American adaptation of Dragon's Den. Shark Tank is the specific United States version of the international format.
The franchise has been adapted in many countries, so names and panel members differ from one edition to another. In Britain, the programme retained the Dragon's Den title, while the United States used Shark Tank. The two shows are therefore related adaptations rather than identical broadcasts, and their episode histories and investors should not be merged.