Could Ariel's sister Attina one day have daughters named Thalassa Brizo and Eurybia?

Yes, it's possible for Ariel's sister Attina to have daughters named Thalassa Brizo and Eurybia, as these names evoke themes from mythology and the sea, aligning well with the underwater world of "The Little Mermaid." In mythology, Thalassa is often associated with the sea, while Brizo and Eurybia are linked to various aspects of the ocean and navigation. Such names would fit seamlessly into the established lore of Ariel's family and their aquatic heritage. Ultimately, this would depend on the storytelling direction taken in future adaptations or expansions of the mermaid universe.