mainly this seal give the person the ability to breath under water like fish there are two way of using this seal one is to sew or burn in to type clothing or leather for some to use seal for amount long person has chakra the second usage is if this is tattooed onto a person it can be counted as a blood line seal but it has major draw back the said person will have limit going out the water like amphibians they have few days worth being out the water till they must get back into water