The Endless Sea, also called the Ocean, the Cosmic Waters, and Apsu, is an infinite saltwater ocean that surrounds the Morning Realm. The further out from the continent, the deeper the seabed, until it eventually becomes too deep to measure. Some speculate that far enough out, there is no bottom. Plateaus, sea mounts, trenches, and underwater floating islands interrupt this trend. There has been no sighting of another continent, but the arrival of the halfling Seasteader Fleet around 380 WE suggests there may be other realms somewhere far across the ocean. The evidence is not strong, the halflings aboard the Seasteader Fleet could not recall any former home, only that they had lived upon the ships for generations. The Cosmic Waters contain many great dangers, especially further out from the realms. Leviathans, sea serpents, and krakens are only some of the dangers that lurk in these impossibly large waters.
DepthsThe depths of the Endless Sea are generally divided into three zones based on illumination: Sunlight Zone, Twilight Zone, Midnight Zone, and the Abyss.
Dangers of the DepthsWater pressure increases as the depth increases, and conversely, the temperature decreases. Both can prove dangerous to divers. As most humanoids cannot breathe underwater, many are forced to hold their breath or use magic. Recasting a badly constructed waterbreathing spell while deep underwater can cause severe internal trauma as the pressurized gas is simply too much for the lungs when it expands. Body heat is also lost much faster in water, and hypothermia is a real risk for divers.
Objects and Water Pressure
|Glass, crystal, ice||100 ft.|
|Wood, bone||500 ft.|
|Iron, steel||1,500 ft.|
Sunlight ZoneThe Sunlight Zone is the topmost layer of the ocean, where the sunlight levels matches that of the world above sea. It extends to a depth up to about 650 ft, depending on the clarity of the water. Most of the life in the Endless Sea exists in the Sunlight Zone. As life here dies, it sinks as marine snow to feed the zones below.
Twilight ZoneThe Twilight Zone is beneath the Sunlight Zone. A dull dim light suffuses the Twilight Zone during the bright day, and darkness claims it when the suns dwindle. It is between 650ft to 1000ft deep.
Midnight ZoneSunlight never reaches below 1000ft. The beings that exist in the midnight zone may have no knowledge of the sun whatsoever. What has surfaced was eldritch-looking: pale, translucently so, with bulging eyes.
Abyssal ZoneThe pressure of the Abyss swells to intense degrees, until it doesn't. Patches of the Abyssal Zone are weightless rathed than weighted, and strange underwater dust storms swell.
Starfalls and Godfalls
When a star falls into the Endless Sea it distorts the waters around it and creates a complex localized ecosystem as it falls. The magic changes the waters in strange and unpredictable ways. Some have reported Starfalls where any spells cast caused flares of wild magic, one where the water becomes magically breathable by all, and another where the water begame gelatinous and thick enough to walk on. A Starfall lasts for about a month until the depths claim it for good. Far out at sea, Godfalls from ages past can still be found. They can be recognized by blooms of golden ichor in the surface of the ocean. These pillars of dangerous ichor rise out from the corpse all the way from the depths.