The Mar de Calaveras is a protected body of water located in the far southeast of the The Northern Reach The sea lies along the primary sea route from the The Inner Archipelago to Skull River Bay. The Pirates of the Northern Reach have declared this sea and the route to and from Skull River Bay as a safe zone, "off limits" for piracy, as part of the The Three Guidelines of Piracy, in order to ensure that Skull River Bay remains a viable market for their ill gotten goods.
This rule has proven difficult to enforce however, even with relatively large bounties placed on the heads of violators. Merchants still do well to travel this sea in convoy