What exactly are the key benefits of Astaxanthin located in Krill Oil? Astaxanthin is an excellent-antioxidant current in Krill Oil. Microalgae while in the ocean produce high levels of astaxanthin which are then ingested with the krill, giving them the pinkish coloring. Astaxanthin can be a keto-carotenoid, like beta-carotene and lycopene, and is