Editing Atlantica

In ''Kingdom Hearts'' Atlantica has a sprawling design that requires certain special abilities to navigate successfully. Sora and company arrive in the {{nihongo|'''{{a|Tranquil Grotto}}'''|安らぎの淵|Yasuragi no Fuchi|lit. "Peaceful Abyss"}}, a small alcove-like area that is generally calm. From there, the party travels forward, to the {{nihongo|'''{{a|Undersea Valley}}'''|アトランティカ（大海）|Atorantika (Ōumi)|lit. "Atlantica (Ocean)"}}, an enormous valley under the sea with numerous alcoves, high-rising rocks and a current throttling upwards. One exit leads to the {{nihongo|'''{{a|Calm Depths}}'''|大海のよどみ|Taikai no Yodomi|lit. "Stagnant Ocean"}}, which hosts a strong current that impedes Sora and company, unless they have the help of the [[Dolphin]] or the [[Mermaid Kick]] ability. Following the trident marks leads to a second part of the area which boasts another current of its own. Making it past the area leads to the {{nihongo|'''{{a|Undersea Cave}}'''|海底洞穴|Kaitei Horaana|lit. "Seabed Cave"}}, a small dark area that boasts a few alcoves but is overall unremarkable.  

Going higher up, the party reaches the {{nihongo|'''{{a|Undersea Gorge}}'''|海底峡谷|Kaitei Kyōkoku|lit. "Seabed Canyon"}}, a vast area which, similar to the Undersea Valley, also boasts alcoves, a few podium-like rocks with clam shells on them and numerous exits to other areas in Atlantica. One of these is {{nihongo|'''{{a|Ariel's Grotto}}'''|アリエルのかくれが|Arieru no Kakurega|lit. "Ariel's Hideout"}}, a small room with shelves, stacked with knick-knacks and "thing-a-ma-bobs." Along the left side of the Undersea Gorge is a passage to the {{nihongo|'''{{a|Undersea Garden}}'''|海底庭園|Kaitei Teien|lit. "Seabed Garden"}}, a small room with a chaise-like rock and a lone clam shell. A third path is to {{nihongo|'''{{a|Triton's Palace}}'''|トリトンの宮殿|Toriton no Kyūden}}, a large, colorful area full of different clam shells, a large, hollow conch shell and a long pathway to the {{nihongo|'''{{a|Throne Room}}'''|トリトン王の間|Toriton-ō no Ma|lit. "King Triton's Chamber"}}, an elegant round room where King Triton resides, which features a save point. Along the right from the Undersea Gorge, close to Ariel's Grotto, is a large sunken [[Treasure Chest]] that is also an exit to the {{nihongo|'''{{a|Sunken Ship}}'''|難破船|Nanbasen|lit. "Shipwreck"}}, a shipwreck site with a large ship in the middle. The insides of the ship is called {{nihongo|'''{{a|Below Deck}}'''|難破船：船倉|Nanbasen: Funagura|lit. "Shipwreck: Hold"}}

After getting into the Sunken Ship area, [[Sebastian]] helps the party find a hidden door in the corner which leads to the creepy and dangerous {{nihongo|'''{{a|Den of Tides}}'''|潮の魔窟|Shio no Makutsu}}, with numerous geysers and stalactites that hang from the ceiling. A fork in the path leads to the {{nihongo|'''{{a|Cavern Nook}}'''|潮の岩屋|Shio no Iwaya|lit. "Grotto of Tides"}} on the right, a small room with a save point and a clam shell, and the {{nihongo|'''{{a|Tidal Abyss}}'''|潮の深淵|Shio no Shin'en}} on the left, a path filled with sea polyps. Past that, {{nihongo|'''{{a|Ursula's Lair}}'''|アースラの岩窟|Āsura no Gankutsu|lit. "Ursula's Cavern"}} awaits, a round room with a large conch shell at one end where Ursula resides, a cauldron in the middle of the room, and a vanity to the right where the sea witch spends most of her time. By using Mermaid Kick from the Calm Depths, Sora and the party can reach the very end to reach the entrance to the {{nihongo|'''{{a|Open Ocean}}'''|アースラの岩窟|Āsura no Gankutsu|lit. "Ursula's Cavern"}}, a large, dark area where their final encounter with [[Ursula]] takes place.

In ''Kingdom Hearts II'' Atlantica is much smaller in comparison to its ''Kingdom Hearts'' appearance, with only two areas available for Sora and the party to freely explore. They arrive and interact with the denizens of Atlantica in the {{nihongo|'''{{a|Undersea Courtyard}}'''|海底広場|Kaiten Hiroba|lit. "Seabed Square"}}, a moderately sized and colorful room, filled with clam shells and undersea flora. Along the way is {{nihongo|'''{{a|Triton's Throne}}'''|トリトン王の間|Toriton-ō no Ma|lit. "King Triton's Chamber"}}, a round room with Triton's throne in the middle and a save point. Several more areas appear only in cutscenes and minigames, including {{nihongo|'''{{a|The Palace: Performance Hall}}'''|宮殿:演奏会場|Kyūden: Ensō Kaijō}}, a huge hall where Sebastian performs his musicals; {{nihongo|'''{{a|Sunken Ship}}'''|沈没船|Chinbotsu-sen}}, a completely different area from the first game that is way brighter and far more spacious; {{nihongo|'''{{a|Ariel's Grotto}}'''|アリエルの隠れ家|Arieru no Kakurega|lit. "Ariel's Hideout"}}, identical to the first game; {{nihongo|'''{{a|The Shore}}'''|海岸|Kaigan}}, an area over the surface with a vibrant blue sky with Eric's castle in view, and the {{nihongo|'''{{a|Wedding Ship}}'''|客船|Kyakusen|lit. "Cruise Ship"}}, an elegantly crafted ship with purple drapery and wedding decorations. Ursula is fought on the surface of the open ocean that is raging in a storm, in an area known as {{nihongo|'''{{a|Wrath of the Sea}}'''|渦巻く海|Uzumaku Umi|lit. "Swirling Sea"}}.