Leviathan

A giant long star, slow but powerful. Was only ever seen once. When it reached the shattered (-812), it moved, turned, and damaged islands as he moved around without realizing (or maybe not caring) of the damage he was causing. Other stars and the giants pushed him away

Longest creature ever seen (at least twice Snake)

You found some forgotten papers, filled with notes about Shattered. If you are interested in these, you should ask Catoblepon by sending a message to them, either as comments in these papers or in their tavern. By seeing interest in these, they will be more excited to expand them and could make them jump in front their priority list.