Naiads

Naiads are river nymphs, they live in any water base, rivers, streams, lakes, marshes, etc. They were thought to carry water for their parents. People would go in the water with the Naiads because Naiads have healing powers. Some nymphs are immortal, but Naiads are not. But, they can live for a really long time, 9720 years, without getting killed by someone. All Naiads’s dad is Nereus which is the god of the sea.
https://www.greeklegendsandmyths.com/the-naiads.html