Wreckage of the Crimson Cove

From publisher blurb:

In the depths of an island cove is the wreckage of a legendary pirate war, the Crimson Cove; named such because all the blood spilled in the conflict was said to stain the basin crimson. These notoriously haunted grounds are said to be rife with the pirates' treasure - though no foolish explorers have ever returned to confirm the legends. Whether hearing of the legends of the Crimson Cove from NPCs, or through a chance encounter with a ghost ship, the players will brave unforetold horrors as they explore the caverns of the Crimson Cove.