The Sea Mother is a semi-mythical whale that supposedly dwells within the Kilche Sea. Larger than most ships and darker than a shadow, as the pirates say, the whale has evidently lived for centuries. The pirates of the Blacksand League tell many tales about the Sea Mother, and supposedly almost every one of them has a friend of a friend who was saved by the creature from the perils of the ocean. Some stories recount the Sea Mother carrying damaged ships to shore on her back, and others tell of her rescuing sailors thrown overboard. More than one tale even claims the Sea Mother specifically protects and aids the pirates, destroying privateers sent after them. Regardless of the details, the creature is viewed with benevolence among the Blacksanders.
Some pirates have taken to offering prayers to the Sea Mother, with many viewing her as a herald or even as a god.