The individuality of the finger print is due to the ridge endings that differentiates one individual from another individual.
There are approximately 150 separate kinds of ridge found in general. Scientist identify the finger of the person by analyzing the two same fingerprints.
The application of finger print recognition helps in finding criminals by matching the finger print of the criminal and the finger print found on the crime scene.
The skin on the palmar surface of the hands and feet forms ridges, so-called papillary ridges, in patterns that are unique to each individual and which do not change over time. Even identical twins (who share their DNA) do not have identical fingerprints.
No, it is not alive because water is a non-living thing. Aka it doesn't have cells or organs. The fact that it rolls up on the beach all depends on wind and the gravitational pull of the Earth.
