What exactly are the advantages of Astaxanthin found in Krill Oil? Astaxanthin is an excellent-antioxidant present in Krill Oil. Microalgae within the ocean generate higher amounts of astaxanthin which can be then ingested because of the krill, giving them the pinkish coloring. Astaxanthin is actually a keto-carotenoid, like beta-carotene and lycop