Low Surface Brightness (LSB) galaxies are still one of the most mysteries class of galaxies in the Universe. Although they are hard to detect, studies indicate that they are a common product of galaxy evolution processes. LSB galaxies are found in wide range of shapes and sizes. Not all of them are gas poor dwarf galaxies. Objects like Malin 1 are among the largest known galaxies in the Universe, with extended gas-rich disks of up to two to three times the size of our own Milky Way. With this talk, I will present our current understanding about the formation and evolution of these fascinatingly faint objects.