O.S.I. Brine shrimp eggs (artemia franciscana cysts) are harvested from the great salt lake in utah. They are washed, dried and vacuum packed for freshness. Newly hatched nauplii from these eggs provide one of nature's finest, nutritious foods for many fishes and invertebrates. Osi provides the highest quality brine shrimp eggs to the aquaculture and aquarium hobby industry worldwide.