Barbara and Kevin take part in a demonstration for an innovative way to tie the knot, and a Pittsburgh native gives an update on her prospering business of sugar scrubs. Also: Two young women pitch toys designed to empower the next generation of female engineers and innovators, a family man tries to sell his design for a porcelain coffee mug that is both elegant and functional, and a finer, more precise golf putter is presented to the Sharks.

Stuffed animals that also serve as washcloths; a handmade wearable sling to carry dogs; a darts-like card game.

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.

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.

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.

The Sharks hear a pitch for hypergravity-exercise clothing, as well as a line of products that appeal to fans of facial hair, and a karaoke machine that adds jaw-dropping vocal harmonies to help users sound like their favorite singing stars. Also: belts that are easy for kids to use, and a follow-up on Barbara's Season 5 investment in a company specializing in hand-knitted socks and leg warmers.

Entrepreneurs with military backgrounds present ideas that include nonslip protective gloves for cross-fitness training, an elite canine training program and a bottle opener made of recycled.50 caliber shells.

A dating app that introduces singles to friends of friends; a new way to eat a bagel.

A vest with a twist that was inspired by a girl's science project; baking healthy, homemade cookies; a cleaning solution for water bottles; re-usable fabric stickers.

An elegant lighting solution; wearable sleep technology; a food bar for dogs; actor Dean Cain and MMA fighter Uriah Faber help pitch custom-tailored suits.

Almond water beverage line; eco-friendly pizza box; real estate investing business; cell phone sanitization solution; update on photo-saving product, Groovebook.

A device to eliminate clogged sinks, real grass delivery service for pets, and a climate-controlled bed.

A mom from Atlanta, GA has the solution to the lost pacifier problem; a beekeeper from Portland, OR wants the Sharks to invest in his hives; a Palm Beach, FL entrepreneur sells customized stuffed animals; two men from Chicago, IL and Indianapolis, IN tout their super-comfortable lightweight running shoes. In addition, Barbara Corcoran follows up with this season's 13-year-old Andrea Hirzel Cao and her mom, Hong Cao, creators of Q Flex.

A sustainable soil replacement for peat moss; sweet-flavored wipes for cleaning kids' faces.

Pat Boone and a man from Vermont present a new eco-friendly car that runs on compressed air.

A very life-like, synthetic human for medical testing; personalized super hero action figures; an affordable online service to help you quickly achieve a high-end interior room design; a sunscreen full-body misting device; Also, an update on the Squatty Potty, that Barbara Corcoran invested in during Season 6.

Nick Woodman; a cafe where the patrons enjoy the company of rescue cats; electric compact vehicle.

A husband and wife from Philadelphia, Pennsylvania, pitch life sized, scientifically accurate, animatronic dinosaurs! An entrepreneur from Los Angeles, California, pitches the virtues of a popular caffeinated Vietnamese beverage. An entrepreneur from Buna, Texas, pitches her beverage coolers. A pair of entrepreneurs from San Andrés, Colombia, and Simpsonville, South Carolina, introduce their tool that helps parents conquer potty training.

Home viewers have a chance to weigh in on whether the Sharks should take the plunge and make a deal.

Gwyneth Paltrow guest sharks; a healthier version of a favorite breakfast indulgence; a product designed to keep beverages crisp and cool; a low-calorie superfood alternative; an eco-friendly version of a baby product.

Guest shark Emma Grede; a line of functional apparel and accessories; a healthy superfood product; a way to store jewelry when on the go; a New York fashion designer who wants to transform the way clothes are manufactured in America.

A kit for teaching how to create cuddly animal characters; a trussing device designed to cook the perfect bird; a company that provides convenient personal storage for medical necessities; an update on Beatbox Beverages.

A stamping kit that proves Santa Claus visited a home; a man hopes his book and plush toy will become part of the Jewish holiday tradition; an easier way to move Christmas lights from storage to display mode; a flexible device that eases pain.

A cattleman from Peoria, Ill., returns to show the Sharks what he has learned about the gourmet meat business since he first appeared on the show during Season 4. Also: a lingerie line that's sewn by women in need; and an update on Barbara Corcoran's Season 6 investment in Pipcorn.

A protein bar with a brain-health mission; a coffee substitute that does not cause jitters; organic plant-care products; an easier way to floss; guest Shark Candace Nelson.