Abisium

Abisium is a mysterious and perilous nation of Thalas, home to the Merfolk and Sea Elves, and one of the most fascinating realms beneath the waves. On the surface, it appears lifeless—an expanse of shattered reefs and jagged coral spires that jut from the sea like the teeth of a drowned god. The landscape is so sharp and treacherous that no land-dweller can safely walk upon it. Yet beneath this deadly crust lies an entire world hidden within the depths—a labyrinthine network of deltas, rivers, and abyssal trenches that plunge miles below the surface. It was during the great Treasure Age that explorers first discovered these depths, and within them, built the glimmering cities of Abisium, lit by glowing coral and the soft luminescence of deep-sea life.

The Merfolk and Sea Elves of Abisium are renowned for their mastery of navigation and cartography, their greatest treasure being their near-infinite collection of maps—living records of Thalas’ oceans, reefs, and forgotten ruins. These maps are not mere ink on parchment but intricate scrolls of shell, coral, and enchanted pearls that reveal the currents, storms, and shifting geography of the seas. Their secrets are priceless, offering any sailor or treasure hunter the knowledge to cross the world unchallenged. But few dare to steal from Abisium, for the depths themselves are its first line of defense. The underwater maze of abysses confuses all who enter uninvited, and those who manage to descend often find themselves surrounded by silent guardians—armored Merfolk and Sea Elves who move like shadows through the dark. Many pirates have vanished in their attempts to plunder Abisium’s vaults, their ships found drifting aimlessly above the coral graveyards. To this day, Abisium remains an enigma: a kingdom of light beneath darkness, guarding the map of the world within the cold embrace of the abyss.