I've read on the HerculesVitamins website that krill oil is shown to promote Cardiovascular health, to maintain cholesterol levels already within the normal range and to support joint health.

For women, krill oil may provide relief from PMS symptoms and may ease the transition of menopause. In addition, Krill oil’s efficacious, antioxidant ingredient, astaxanthin, can provide excellent support for the eyes and skin against ultraviolet light.