The Sea stars (Asteroidea: Echinodermata) are comprising of a large and diverse groups of sessilemarine invertebrates having seven extant orders such as Brisingida, Forcipulatida, Notomyotida,Paxillosida, Spinulosida, Valvatida and Velatida and two extinct one such as Calliasterellidae andTrichasteropsida.