Shark Tank

Ambitious entrepreneurs present their breakthrough business concepts.

The Sharks hear from an entrepreneur with a life-saving idea.

An entrepreneur makes a less-than-stellar presentation to the sharks.

A man from California wants to franchise his graffiti-removal business.

An entrepreneur tries to get the sharks to invest in his fitness device.

A young Chicago entrepreneur plays hardball with the sharks.

A housewife from Charleston, S.C., charms the male sharks.

A young entrepreneur's overconfidence could blow a deal with the sharks.

A veterinarian's product claims to prevent cancer in pets.

A urologist has an unusual business proposal.

Things get heated when the sharks deal with a husband-and-wife team.

Two Texas bicyclists have an idea for a portable hand degreaser.

A California entrepreneur wants to bring back old-fashioned ice cream men.

A man from Florida reinvents the umbrella.