This Book Describes About The Importance Of Marine Species In Our Life. Most Of The Species Can Be Used For Treatment Of Diseases. Astaxanthin Is A Carotenoid That Is Find Abundantly In Marine Yeast. It Is Achieving Importance As An Antioxidant. The Carotenoid Also Posses Many Pharmacological Activities. Marine Yeast Is Also An Important Species In Which A Vast Research Was Carried Out. It Is Present In Nature In A Wide Number Of Varieties