Pakistan Journal of Biological Sciences1028-88801812-5735Asian Network for Scientific Information10.3923/pjbs.2021.1333.1339William SchaduwJoshian Nicolas 1220212412Background and Objective: There is a growing interest to significantly explore more opportunities in the coastal environment. For this reason, adequate progressive strategies appear very essential. The purpose of this study was to analyze seawater quality as a database for developing integrated and sustainable marine tourism in Mantehage Island, Indonesia. Materials and Methods: The present paper applied descriptive and quantitative methods to sample 20 observation points around the selected location. In addition, the seawater content was directly measured and stored in the laboratory for further analysis. Consequently, certain parameters were evaluated, including salinity, temperature, turbidity, pH, total suspended solids, dissolved oxygen, NO3-N and PO4-P. The subsequent data were also compared to the related quality standards of the Minister of Environment, Decree No. 51 of 2004. Results: Based on the results, Mantehage water quality demonstrated an excellent condition and is also believed to support the proposed marine tourism development. Conclusion: The values of salinity, temperature, turbidity, pH, total suspended solids, dissolved oxygen, NO3-N and PO4-P, the condition of Mantehage water quality obtained a suitable category within the specified standards of the Minister of Environment Decree No. 51 of 2004. Several parameters known to exceed these provisions, including nitrate and phosphate content, indicate the instantaneous value during measurement.]]>Tangian, D., D. Djokosetiyanto, K. Kholil and A. Munandar,201537584Djamaluddin, R.,20181913031312Opa, E.T., J.D. Kusen, R.C. Kepel, A. Jusuf and L.J.L. Lumingas,20191213881403Kase, A., I. Manembu and J. Schaduw,20197208212Schaduw, J.N.W., K.I.F. Kondoy, V.E.N. Manoppo, A. Luasunaung and J. Mudeng et al.,20202020Schaduw, J.N.W., K.F.I. Kondoy,202013951957Kalalo, F.P.,20171014131420Wagey, B.T., F.B. Boneka and R. Mantiri,20201338303839Schaduw, J.N.,2018324049 Kurniadi, B., S. Hariyadi and E.M. Adiwilaga,2015205358Haerudin, H. and A.M. Putra,201931318Tomczak, M. and J.S. Godfrey,19941st Edn.,Pages: 422Pages: 422Simanjuntak, M.,20124290303Putra, A., T.A. Tanto, W.S. Pranowo, I. Ilham, H. Damanhuri, Y. Suasti and T. Triyatno,2018148794Wisha, U.J., T.A. Tanto and I. Ilham,2016221524