The Shadow Sea is a major feature of The Shadowlands, its waves lapping the shores of the far-flung lands of that dry and dusty realm.
The sea is vast, cold, and generally quite calm, with low, steady swells. However, it is occasionally wracked by terrible supernatural storms (called Tempests) that can be far greater than any storm that inflicts the Waking World. Some say these storms cause echoes in the Sunlit Lands and that the real world's most terrible and damaging hurricanes and typhoons are echoes of these Otherworld storms.
Legends say that the ghosts of long-dead mariners, sunken ships, and far stranger creatures and vessels sail this sea. Legend also says that ships from the Waking World can occasionally inadvertently wander into this ocean, only to find escape difficult or impossible, cursed to endlessly sail beneath the Stars That Do Not Set, seeking escape but never finding it.