Editing Walkthrough:Kingdom Hearts/Atlantica

Just before you enter this world, a brief scene will show {{Wtext|Sora|c}} being concerned about entering this world, since they will drown if they enter it. {{Wtext|Donald|c}} then tells him that his magic can allow them to survive. {{Wtext|Sora|c}}, {{Wtext|Donald|c}} and {{Wtext|Goofy|c}} have now become adapt to undersea life as to {{Wtext|Donald|c}}'s magic. Once you land {{Wtext|Ariel|c}} and {{Wtext|Flounder|c}} will swim towards you from another area, with {{Wtext|Sebastian|c}} tagging along behind. Soon you'll be given a tutorial on how to swim, just follow {{Wtext|Flounder|c}} up and down, then finally {{Wtext|Sebastian|c}} will move along to self-defense but the Heartless arrive to attack. {{Wtext|Ariel|c}} leaves the area while {{Wtext|Sebastian|c}} and {{Wtext|Flounder|c}} hide inside the {{Wtext|clam|t}}. Attack the Heartless to proceed further. {{Wtext|Ariel|c}} will swim back once the Heartless are gone, then you must attack the {{Wtext|clam|t}} which will let out {{Wtext|Sebastian|c}} and {{Wtext|Flounder|c}}, and reveal a Save Point as well.  

[[File:Donald Duck AT KH.png|60px|left]]

After the small cutscene, you'll be able to put {{Wtext|Ariel|c}} into your party. Head towards the area where the trident is pointing to which will lead you to the {{Wtext|Undersea Valley|l}}, head to the right to a {{Wtext|red clam|t}}, cast {{Wtext|Fire|w}} on it to open it and get a {{Wtext|Mythril Shard|i}}. Now as you'll have noticed {{Wtext|chests|t}} have now become {{Wtext|clams|t}}, <font color="red">red</font> for {{Wtext|Fire|w}}, <font color="blue">blue</font>  for {{Wtext|Blizzard|w}}, <font color="yellow">yellow</font> for {{Wtext|Thunder|w}}, and plain white ones which open just by hitting them. Now head to the right again into a small alcove where an {{Wtext|clam|t}} is, open it to get a {{Wtext|Mega-Ether|i}}. Head down from where the {{Wtext|red clam|t}} is and you'll find another {{Wtext|clam|t}}, hit it to get a {{Wtext|Mega-Potion|i}}.  Now go up and head north from where the {{Wtext|red clam|t}} is, there should be two {{Wtext|clams|t}}, one on a lower platform and the other on a higher platform. The higher one contains an {{Wtext|Elixir|i}}, the lower one contains a {{Wtext|Cottage|i}}. Now head down through the exit to the {{Wtext|Calm Depths|l}}. Now you'll be pushed off by a strong current, if you don't act in time you'll have to go all the way back from the other end of the {{Wtext|Undersea Valley|l}}, take the first right as you're sent across the current. Avoid the current flowing upwards and swim away from all Heartless, keep going ahead to the {{Wtext|Undersea Cave|l}}.  

In this map there is an {{Wtext|clam|t}} inside a small alcove which contains a {{Wtext|Cottage|i}}, keep going up to the {{Wtext|Undersea Gorge|l}}. As soon as you get in, head to the left and go as low as possible to get to a {{Wtext|Mythril Shard|i}} from a {{Wtext|blue clam|t}}. Head to the exit for {{Wtext|Triton's Palace|l}} but take a left and head to the {{Wtext|Undersea Garden|l}} and open the {{Wtext|clam|t}} there to get a {{Wtext|Mega-Potion|i}}, now head back to {{Wtext|Triton's Palace|l}}, defeat all Heartless and stay to the right side of the map, there's a {{Wtext|yellow clam|t}} here which contains a {{Wtext|Mythril Shard|i}}. Now head to {{Wtext|Triton's Throne|l}} straight ahead for a cutscene.  Three {{Wtext|Screwdiver|e}}s will be following the party, but {{Wtext|King Triton|c}} vaporizes them before they get too close. He refuses to tell the party about the Keyhole, and forbids {{Wtext|Ariel|c}} from leaving the palace. She swims off with the party following, {{Wtext|Triton|c}} then suggest he's probably being too strict and that he's just concerned of her safety. Then {{Wtext|Sebastian|c}} tells {{Wtext|King Triton|c}} that the Heartless are coming from {{Wtext|Ursula|c}}'s Grotto. Now you're back to playing the party, head back to {{Wtext|Triton's Throne|l}} and open the large {{Wtext|clam|t}} to reveal a save point, save and head to the {{Wtext|Undersea Gorge|l}} and {{Wtext|Ariel|c}} will as you to go to the far left bottom to {{Wtext|Ariel's Grotto|l}}.

Inside she'll show you all the things she and {{Wtext|Flouder|c}} have collected, you may also notice a trident-head shaped emblem on the base shelf, {{Wtext|Ariel|c}} suggests to go looking for the Keyhole, she doesn't care about what her father said even though {{Wtext|Sora|c}} reminds her. There are four {{Wtext|chests|t}} in this area, one is at the bottom near a clock containing a {{Wtext|Mega-Potion|i}}, another at the 2nd topmost shelf containing a {{Wtext|Torn Page|i}}, the 3rd is on the 4th shelf from the bottom containing a {{Wtext|Cottage|i}} and the last is on the bottom to the right of the first chest containing a {{Wtext|Ether|i}}. Now head back out as {{Wtext|Flotsam and Jetsam|c}} appear, in fact this leads up to the next cutscene where {{Wtext|Ursula|c}} is looking over the progress of {{Wtext|Sora|c}} and the party, she claims they will never find the Keyhole but that {{Wtext|Ariel|c}} would prove useful and that she's got the Heartless on her side to aid her. She then exclaims that {{Wtext|Triton|c}}'s day is coming. Now you'll be back in control of {{Wtext|Sora|c}}, head straight ahead to a {{Wtext|clam|t}} that contains a {{Wtext|Mega-Ether|i}}. Head to the {{Wtext|Undersea Valley|l}} and defeat all Heartless in the area, then look for the {{Wtext|Dolphin|c}} here and grab onto it and it'll take you over to the {{Wtext|Calm Depths|l}} then into the entrance of the {{Wtext|Sunken Ship|l}}.

Here there are numerous {{Wtext|chests|t}} here, from the entrance go straight and then drop straight down to find a ship with a broken hull, enter inside to a {{Wtext|chest|t}} that contains an {{Wtext|Elixir|i}}, then get out and go up and into the ship, the {{Wtext|Shark|c}} will swim by. Now inside the ship there is a {{Wtext|chest|t}} straight ahead but forget it for now and go to the back of the ship, there's a chest to the left containing a {{Wtext|Mythril Shard|i}}, there is a hole underneath the stairs that leads to a {{Wtext|clam|t}} containing a {{Wtext|Mythril|i}}, now head back to the {{Wtext|chest|t}} that we left and open it to get the {{Wtext|Crystal Trident|i}}, however the {{Wtext|Shark|e}} will appear as you approach the {{Wtext|chest|t}}. Now head back outside, you can fight the {{Wtext|Shark|e}} for 100XP. There'll be an exit lower down from the main one, but go to the right of it to get a {{Wtext|chest|t}} containing a {{Wtext|Mythril Shard|i}}, now head through the exit to the {{Wtext|Undersea Gorge|l}}. There's an inactive crater ahead of you, hit it to cause a stronger current, head through it upwards to pop out the large {{Wtext|Treasure Chest|t}}, open it to get an {{Wtext|Orichalcum|i}} then head to {{Wtext|Ariel's Grotto|l}} to the right and swim up to the trident-head shaped emblem for a cutscene.

During the cutscene, {{Wtext|Sora|c}} places the {{Wtext|Crystal Trident|i}} into the emblem, however before anything happens {{Wtext|King Triton|c}} show ups and destroys the {{Wtext|Crystal Trident|i}}, causing {{Wtext|Ariel|c}} to swim off crying. He also exiles the party from the World however {{Wtext|Sora|c}} and his party decide to stay regardless of {{Wtext|Triton|c}}'s ruling. Meanwhile, {{Wtext|Ursula|c}} tricks {{Wtext|Ariel|c}} into helping her take {{Wtext|King Triton|c}}'s {{Wtext|Trident|i}}. Once you're back in control, head out of {{Wtext|Ariel's Grotto|l}} and once you reach the exit to {{Wtext|Triton's Palace|l}} a cutscene will play showing {{Wtext|Ariel|c}} escorting {{Wtext|Ursula|c}} to {{Wtext|Triton's Throne|c}} to get the {{Wtext|Trident|i}}. Swim all the way to {{Wtext|Triton's Palace|l}} and in a cutscene {{Wtext|Triton|c}} is shown weak and helpless on his Throne while {{Wtext|Ursula|c}} basks in the glory of the {{Wtext|Trident|i}}, {{Wtext|Flotsam and Jetsam|c}} note to {{Wtext|Ursula|c}} that the Keyhole is not in the Palace and her exclaiming in shock, however {{Wtext|Sora|c}} and his party make it back to the Palace but {{Wtext|Ursula|c}} makes off with the {{Wtext|Trident|i}}. {{Wtext|Ariel|c}} rejoins the party determined to defeat {{Wtext|Ursula|c}} and get the {{Wtext|Trident|i}} back with {{Wtext|Sebastian|c}} tagging along, before you go, {{Wtext|Triton|c}} gives a small hint on how to defeat {{Wtext|Ursula|b}} by casting magic against her cauldron. Save and head to he {{Wtext|Sunken Ship|l}} map, defeat the {{Wtext|Shark|b}} to allow {{Wtext|Sebastian|c}} passage to the button close to the door with the strange glyph on it.

{{WKH1SBoss

|name=Shark

|image=Shark KH.png

{{tab|Ursula I}}

|strategy=For this fight you'll need lots of {{Wtext|Ether|i}}s or you can keep attacking {{Wtext|Flotsam and Jetsam|e}} for extra MP. Use {{Wtext|Fire|w}} on her cauldron when it's red and {{Wtext|Blizzard|w}} when it's blue. When done right she will be stunned momentarily allowing you to land a few combos on her. Once she's gained consciousness she'll twist about her tentacles causing massive damage. Cast {{Wtext|Aero|w}} for any needed help against her attacks. Use {{Wtext|Potions|i}} to heal.}}

{{tab|c}}

{{tab|Flotsam and Jetsam}}

|strategy=They do not cause serious damage however they may take out a large amount of health. They have no extra defenses like {{Wtext|Ursula|b}} however they get in the way. Defeat them for extra MP in case you run out of {{Wtext|Ether|i}}s.}}

After defeating her {{Wtext|Flotsam and Jetsam|e}} dissipate and she will disappear into what appears to be a portal. You'll then learn Mermaid Kick, which is needed to reach {{Wtext|Ursula|b}} for the second battle with her. But for now stay inside her lair and look around, there's a sea urchin hiding underneath the ground and a large {{Wtext|clam|t}} is hanging from the wall however is shut tight. Leave the area and enter again to make it appear close to the {{Wtext|clam|t}}, keep attacking it to make it blow up opening the {{Wtext|clam|t}} dropping a {{Wtext|chest|t}}, open it to get a {{Wtext|Mythril|i}}. Now head back to the {{Wtext|Calm Depths|l}}, and take the exit straight head to {{Wtext|???|l}} if you're coming from the {{Wtext|Sunken Ship|l}} area.

|name=Ursula II

|image=Ursula (Giant) KH.png

|prize={{Wtext|Thunder|w}}, {{Wtext|Ansem's Report 3|i}}

|strategy=This fight requires a lot of handiwork, you must absolutely cast {{Wtext|Aero|w}} at the start of the battle and go crazy on her face. She's got light attacks that pierce heavily on your health to heal frequently as well. Another attack is where she will blow bubbles your way, these do not do much damage, and can be easily negated with {{Wtext|Aero|w}}. When she attempts to suck you in you must counteract and use {{Wtext|Mermaid Kick|w}} to get away from her, if she sucks you in she will bite you, however again, {{Wtext|Aero|w}} will negate the damage. Once you get through most of her HP she will use her most powerful attack where she raises the {{Wtext|Trident|i}} to call unto several beams of light to jolt you at once, this will take a large amount of health, even with {{Wtext|Aero|w}}. Use {{Wtext|Cure|w}} as soon as possible to avoid impending knock out. The best place to attack her is from the back at the base of her neck, as she will keep attempting to turn around, she will push you along and automatically keeping you away from the beams of light.}}

After defeating {{Wtext|Ursula|b}} the {{Wtext|Trident|i}} will be out of her grasp and you'll return to the palace, where {{Wtext|King Triton|c}} will tell you that the world's Keyhole is in {{Wtext|Ariel's Grotto|l}}. Head to the Grotto, and in he cutscene, {{Wtext|Ariel|c}} will use the {{Wtext|trident|i}} to reveal the Keyhole with {{Wtext|Sora|c}} locking it, ending {{Wtext|Atlantica|l}}'s story. {{Wtext|Ariel|c}} will give you the world's Keyblade, the {{Wtext|Crabclaw|w}} from her collection of do-dads and thinga-ma-bobs.

If you want to get a 100% completion, you will need to return to {{Wtext|Atlantica|l}} to use the {{Wtext|White Trinity|i}}, which can be found in {{Wtext|Triton's Palace|l}}.