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.
Depths
The 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 Depths
Water 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
Material | Destructive Depth |
Glass, crystal, ice | 100 ft. |
Wood, bone | 500 ft. |
Stone | 1,000 ft. |
Iron, steel | 1,500 ft. |
Mithral | 2,000 ft. |
Adamantine | 2,500 ft. |
Sunlight Zone
The
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 Zone
The 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 Zone
Sunlight 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 Zone
The 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.
Nice article. Really liking the different zones of the sea and especially that there is a weird abyss layer at the very bottom. How deep you can go with each material before it being destroyed was also a cool addition. :) One remakr though, I don't know what you mean with this sentence :p perhaps accidental wrong order? "What as surfaced is eldritch-looking, pale, with bulging eyes and bioluminescence."
Thank you. Yes, that's a typo, I'll go fix it!