This paper presents the details of experimental stu dies carried out on Kappaphycus sp. To determine va rious vitamins. Sample was collected from the sea coast of Rameshwaram, Tamil Nadu, India in the form of dr y and living sample. Standard material methods have been followed for estimation of vitamins available in Ka ppaphycus sp. The compositions of vitamin C, vitamin E, selen ium and magnesium were found to be 0.123gm, 0.243gm , 0.0012gm, 0.0245gm per 100 gm respectively. From s tudy of vitamins, it was observed that the quantity of vitamin A is 1355.6 IU. Folic acid content is 1.22μ g and choline is 0.676μ g. Vitamins B1, B2, B3 and B6 are present in lesser quantity. B5 and B12 were observed to be in traces. From the overall study, it can be concluded that the species can serve as functional food with vital nut ritional and biological values