Etheria (themed Mermaid Alien) - Like Arial but betterer (series)

Etheria, a cosmic traveler moves freely between worlds, bringing harmony to species on the brink of transformation. To some, she resembles the mythical mermaids of Earth.

An elegant otherworldly being who emerges from the water. Upon arrival, Etheria creates an underwater paradise or oasis that integrates flawlessly into the planet’s natural rhythms. She observes emerging species, guiding them toward sustainable coexistence rather than unchecked expansion until she is satisfied they can sustain themselves.