Marina blue is a multifunctional dye crucial for biological experiments, aiding researchers in observing and analyzing cell structures, tracking biomolecules, evaluating cell functions, distinguishing cell types, detecting biomolecules, studying tissue pathology, and monitoring microorganisms. Its applications span from basic scientific research to clinical diagnostics, as well as traditional fields like textile dyeing and emerging fields such as functional textile processing, food pigments, and dye-sensitized solar cells.