North Atlantic in olive oil. Every catch mercury tested. Protecting you and our oceans. A Healthier and Better Tasting Mackerel: Safe Catch Skinless & Boneless Mackerel are caught in the Eastern Central waters of the Atlantic Ocean. To ensure we are providing the healthiest, purest mackerel available, we mercury test every catch toa limit of O.15 ppm, so you can enjoy this nutritious superfood with confidence. Every catch mercury tested. Minimally processed to retain nutrients & flavor. Hand packed slow cooked. DHA & EPA Omega 3s: Natural source of omega-3s. Sustainably wild caught. American Pregnancy Association.