Hydroxyapatite (HAP) is a major mineral constituent of vertebrate bones and teeth. Corals may be used for substitution purposes in biomaterials having many biomedical applications. Corals (sea-shells) of class "Gonipora" having characteristics of natural micro-porous structure were used as a raw material in present investigation. A simple method of converting the corals into HAP powder using wet precipitation method has been developed. Thermogravimetric Analysis (TGA), X-Ray Diffraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR) and Scanning Electron Microscopy (SEM) were employed...