Royal green has conducted intensive research into the best and purest way of obtaining omega 3 from a vegetable source as royal greens omega 3 is not obtained from fish it is therefore absolutely free from any possible contamination from the ocean the algae is cultivated in pure fermentation tanks and is harvested and processed into an omega 3 oil at exactly the right time the capsules are very rich in dha which supports the development of eyesight and is good for the memory concentratio