Perfluoalkyl substances (PFAS) is shorthand for a group of fluorinated compounds that have been used extensively in household products such as non-stick cookware, stain-resistant carpeting and upholstery. They can also be found in things from clothing to adhesives, and even in some cosmetics. PFAS use is being phased out because they have been shown to target the immune system in humans and rodents. If you check product labels the next time you are shopping, you may see “No-PFOA” or “NO-PFAS.” However, PFAS substances have found their way into our environment and stay there because they are not biodegradable. The effects of PFAS on marine organisms are still not clearly understood.