Thalassian refers to a fictional language and culture associated with the Night Elves in the World of Warcraft universe. It is primarily spoken by the Naga, a race of sea-dwelling creatures that evolved from the Night Elves. Thalassian is characterized by its melodic and fluid sounds, reflecting the aquatic nature of its speakers. The language is often used in various quests and lore within the game, showcasing the rich history and connection of the Naga to the ocean. Thalassian serves as a means of communication among the Naga and is integral to their identity and culture in the expansive Warcraft lore.