Mer­po­lis is the un­der­wa­ter city with­in the in­land sea called the Rear Gulf. It is carved from the moun­tains of white stone and rich­ly dec­o­rat­ed by mer­maids, the de­scen­dants of the an­cient civ­i­liza­tion of artists and sculp­tors. It prob­a­bly has more dec­o­ra­tions than the rest of the world put to­geth­er: it's lit­er­al­ly filled with sculp­tures made of white stone, which is the main ma­te­r­i­al for sculpt­ing un­der the sea.

But Mer­po­lis does al­so have a deep­er lev­el, with even more mirac­u­lous crea­tures who don't feel com­fort­able in the shal­low wa­ters. The bod­ies of the deep ones are very soft, able to com­form to the great un­der­wa­ter pres­sure, and their limbs of­ten reach the state of ten­ta­cles in their soft­ness and shapes. They have jel­ly-like skin and slug­gish fea­tures.

See al­so