What is algae oil algae oil is a rich source of omega 3 fatty acids derived from marine algae which has been refined into an oil why use algae oil algae oil is a vegan friendly source of the omega 3 fatty acid dha docosahexaenoic acid dha has been found to contribute to the maintenance of normal vision brain function and blood triglyceride levels who can benefit algae oil is an ideal choice for those looking for a vegan friendly way to increase their intake of omega 3 fatty acids