Due to various factors such as differential light absorption across wave-lengths, light scattering and refraction by suspended particles, and potential constraints of underwater imaging equipment, image acquisition in underwater settings is inherently constrained. Consequently, these factors contribute to the degradation of image contrast and visibility, along with color distortion. Considering these problems, we propose an image enhancement method that combines physical and non-physical models and utilizes fusion. In our proposed method, we calculate the medium transmittance using the dark ch...