Plunder Journal from Gray Fog

It's a journal that belongs to the Cox Pirates of Gray Fog. There are entries that details where Cox Pirates get their resources and where they plan to plunder next. However, one entry seems to have a different information. Instead of plundering and targeting the Trina Marines, it looks as if the Cox Pirates are looking for the fossilized blood of a monster.
※ This is a quest item. You need to bring it to Delphad Castillion.