The present invention encompasses oils that have anti-inflammatory or resolution-stimulating activity that contain or are enriched with Specialized Proresolving Mediators (SPM) or SPM precursors, which originate from an oil obtained from organisms containing long chain omega-3 polyunsaturated fatty acids, such as fish, crustaceae, algae, and mollusks. The invention also encompasses a method for the production of these oils, and the utilization of the oils for nutritional supplements, pharmaceutical formulations, and cosmetic formulations, which can be employed for treating an inflammatory condition.