Shark Tank >> Season 6

Singer Pat Boone helps to pitch an eco-friendly car that runs on compressed air; a fit mother of three touts the benefits of her diet snack bars; a fisherman offers the Sharks the chance to invest in his unique lure, which helped him earn a world record; and two Cincinnati men look for help growing their eyeglasses business. Also: a follow-up on Lori's investment in Heidi Ho Organics.

Everything pitched to the Sharks is made in the U.S. including: custom recruitment clothing for sororities; simple tools which are used to open a Thai coconut and extract the meat; and an invention that can transform a pickup into a "Truck-U-V." Also: an update on a teen who runs a designer bow tie company.

Business ideas and products started by entrepreneurs while they were in college are featured, including a couple who provide microloans to those in need. Also: Interest in a Philadelphia student's scholarship app leads three of the Sharks to walk out of the Tank; and the inventors of Bottle Breacher, which was invested in by Kevin and Mark during Season 6, offer an update.

A Portland, Ore., couple seek financial backing for their customized sandals, which are manufactured in Uganda; a father explains how his daughter inspired him to make a gold-mining bucket; a San Francisco woman pitches a sports bra that she claims is a "fanny pack for your rack"; and the Sharks consider investing in a do-it-yourself kit to develop photos. Also: an update on the Paint Brush Cover from Season 5.

A man from Davenport, Fla., seeks an investment in his grass delivery service for pet owners. Also: a device to eliminate clogged sinks; a worry-free way to share lip balm without sharing germs; a climate-control system for beds; and an update on Barbara Corcoran's investment in Tom+Chee from Season 4.

Transplanted Parisians offer the Sharks a taste of their grandmother's almond-water recipe; a NYC city duo look for an investment in their eco-friendly pizza box; a San Francisco entrepreneur claims to have come up with a "game changer in real-estate investing"; and cousins from Utah pitch their idea for sanitizing germ-ridden cell phones. Also: an update on GrooveBook, which Kevin O'Leary invested in during Season 5.

Three sisters make a pitch for their dating app; an entrepreneur claims to have a solution to a common problem for online shoppers; a former publisher shares her design for a shirt that makes people look skinny; and a pair of Wall Street brokers demonstrate a compact way to eat a bagel. Also: an update on Hamboards, which Robert invested in during Season 5.

Products for the holidays are featured, including a stamping kit that proves Santa made a visit. Also: a book and plush toy designed to become a Jewish tradition; an easier way to handle the storage and display of Christmas lights; a 13-year-old girl's device to ease muscle pain; and an update on a Hanukkah tree topper invested in by Daymond John during Season 5.

A Brooklyn man pitches his business of foldable, wheeled luggage; a Texas woman makes soaps, washes and grooming products; a fashionable line of sports apparel for women; a single-serve wine product; an update on some of Lori Grenier's investments.

The Sharks celebrate 100 episodes with a look back at their favorite memories, plus they reveal why they participate on the show, as well as take part in a cake-cutting ceremony and a champagne toast. Also: a mother and son who are concerned with healthy bowels; a plywood alternative for storm protection; organic mini-popcorn created by siblings from Brooklyn; a dairy-free line of plant-based cheeses; and an update on the Living Christmas Company invested in by Mark Cuban during Season 5.

Entrepreneurs with military backgrounds have the opportunity to pitch their products. Included: a nonslip-protective glove for CrossFit; an elite canine-training program; a carrying case for men; a bottle opener made from recycled .50 caliber shells.

An olive oil bar where one can sample oils before purchasing; unique wedding registry idea; a product that can turn a smartphone into a personal security device; boxed wine geared toward millenials; a follow-up on Breathometer.

Entrepreneurs include the owner of an all-female golf caddy company, a couple who believe they have come up with a better, safer way for kids to bounce, and a trio who pitch to the Sharks their fun spin on a classic faceware accessory. Also: an update on Mark Cuban's $2 million investment in the Los Angeles Haunted Hayride during Season 4.

The Sharks consider a business idea for affordable wedding cakes brought to them by a mother and son from Grand Rapids, Mich. Also: a Houston restaurateur with a solution to a common problem encountered while dining out, and an update on a screen repair fix-it kit that Lori invested in during Season 5.

Two men try to sell the Sharks on their stuffed animals for the bathtub, a dog lover from Los Angeles shows off a wearable pet carrier, and ninja entrepreneurs demonstrate a darts-like card game. Also: a follow-up on a custom bike company based in Dallas, which was invested in by Mark and Barbara during Season 3.