Beta-Brine is super-concentrated enriched Artemia salina. Beta-Brine Artemia are naturally enriched with beta-carotene because they feed on phytoplankton (Dunaliella) that has exceptionally high beta-carotene content. Beta-Brine Artemia have been aquacultured in Western Australian salt ponds, distantly located from urban population centers and pollution sources. Beta-Brine Artemia are harvested while actively feeding upon marine phytoplankton for maximum nutrition. No freshwater phytoplankton has been added.