The American adaptation of the business-pitch format used by Britain's Dragon's Den is titled Shark Tank.
Shark Tank is the United States version of the international format in which entrepreneurs present companies and products to wealthy investors. Contestants seek capital in exchange for an ownership stake, and the investors may make offers, negotiate terms or decline to invest.
The American title changes the animal metaphor from dragons to sharks, but the underlying structure is closely related. Britain's programme uses the name Dragon's Den, while other countries have adopted their own titles and investor branding. This can lead viewers to treat the two shows as unrelated programmes when they are adaptations of the same broad format.
Shark Tank premiered in the United States in 2009 on ABC. Its panel and business stories are separate from those of the BBC series, so an investment made on one programme should not be attributed to the other.