Can five bearded makers build a guitar-shaped boat that holds two passengers, plays music and actually floats? Only one way to find out, sailor.

When an entrepreneurial team from Santa Cruz, California, leaves the Tank to discuss an offer for their electric skateboard business, they get a surprise from the Sharks upon their return;…

A Dallas, Texas, real-estate broker’s pitch leads to a battle of billionaires about his business model for a technology that makes house hunting more convenient; an impressive 10-year-old kidpreneur from…