|Foundation date||July 5th, 2017|
Hydrius was a state that existed in the shallow +,+ off the coast of what is now Yoahtlian Odresh. It was announced on the subreddit on July 5th, 2017 by u/BlueDude35, who had previously stated their intentions to found an ocean-based state on June 24th of the same year. By July 16th, they had 3 citizens, a train station, and new claims on some nearby islands due to farming being impossible in the ocean. On July 30th, u/BlueDude35 noted that Boatmurdered was infringing on the claims of an unknown city-state that Hydrius was allied to.
It is unknown what happened to Hydrius, but it probably disappeared due to inactivity.