PROTEIN BARS MADE WITH CRICKETS, A MUST-HAVE GARAGE DOOR LOCK, A "CURE" FOR BEDHEAD, AND A TEXTBOOK RENTAL PLATFORM ARE THE PRODUCTS ON "SHARK TANK," AIRING FRIDAY, MARCH 21

"Episode 523" - An entrepreneur from Salt Lake City hopes to convince the Sharks of the delicious and healthy merits of his energy bars fortified with protein from crickets; an inventor from Vista, California shows how his garage lock will protect everyone from easy break-ins, a confident entrepreneur from Needham, MA, tries to school the Sharks, even those without hair, on a "paradigm shift in morning grooming" - his shower cap to fix bedhead, and two young men from Chicago, OH, try to woo the Sharks on their e-commerce platform for digital textbook rentals. And, an amazing update on this season's newest success story - Fiber Fix, created by entrepreneurs from Orem, Utah, in which Lori Greiner invested, on "Shark Tank," FRIDAY, MARCH 21 (9:00-10:01 p.m., ET) on the ABC Television Network.

The Sharks in this episode of "Shark Tank" are Mark Cuban, Daymond John, Barbara Corcoran, Robert Herjavec and Kevin O'Leary.

Mark Burnett, Clay Newbill and Phil Gurin are the executive producers of "Shark Tank," which is based on the Japanese "Dragons' Den" format created by Nippon Television Network Corporation. The series is produced by Sony Pictures Television.

"Shark Tank" is broadcast in 720 Progressive (720P), ABC's selected HDTV format with stereo sound. This program carries a TV-PG parental guideline.

For more information on "Shark Tank," visit ABC.com.