| Engulfed Castle | |
|---|---|
| [[File:|]] | |
| Location | Serene Shores |
| Sublevels | 5 |
| Rescues | 2 |
| Treasures | 17 |
| Onions | 0 |
| Hazards |    
|
| Suggested Pikmin | Blue Pikmin |
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The Engulfed Castle is a cave in the Serene Shores in Pikmin 4. It has five sublevels. Only Blue Pikmin can access its entrance, as it is submerged in undrainable water. Hazards of all types appear throughout the cave; Glow Pikmin spawned from Glow Seeds or a suitably upgraded Oatchi can be utilized to clear them, although neither are strictly required, as all hazards can be destroyed or circumvented even with just Blue Pikmin.
The boss of this cave, the Waterwraith, is unique in that it will drop from the ceiling after five minutes have passed in any sublevel. It is extremely dangerous, instantly killing both Pikmin and enemies indiscriminately. It cannot be hurt whatsoever until the cave's final sublevel, where Violet Candypop Buds will allow for the creation of its only weakness, Purple Pikmin. Defeating the Waterwraith unlocks an exit leading to the top of an otherwise inaccessible hill, allowing passage and collection of a good portion of treasures in the Serene Shores' upper half. This cave has 
× 1,145 worth of treasure.
How to reach
The entrance to Engulfed Castle is found in a flooded alcove beneath the clay bridge next to the Water's Edge base. No matter if it is past noon or not, the entrance will always be submerged in water, meaning only Blue Pikmin can enter and exit from here.
The exit can also be used to re-enter the cave. Because it is not submerged, any Pikmin type can enter or exit from here, although the game will still only recommend Blue Pikmin. It is found in the area behind the Water's Edge base, up from the paper bag that must be pushed down beforehand.
Notes
Olimar's Voyage Log
Waterwraith
On the first four sublevels, the Waterwraith will drop down from the ceiling after five minutes. There are a few things to keep in mind about it:
- It will patrol the sublevel, attempting to target and crush Pikmin with its rollers. However, these rollers will also indiscriminately destroy traps and instantly kill most enemies. Use this to your advantage.
- Unlike Pikmin 2, the Waterwraith can navigate into corners to crush Pikmin. As such, hiding in corners is generally ineffective. Instead, run to areas with green floors if one needs to escape from it; the Waterwraith will refuse to enter those areas and will disengage the chase to find Pikmin elsewhere, offering some breathing room.
- The Waterwraith moves noticeably slower compared to its depiction in Pikmin 2. It is relatively easy to outmaneuver it while riding Oatchi, but be cautious: One wrong move could result in the Waterwraith crushing Oatchi, leaving your entire army to its mercy. Additionally, the Waterwraith is powerful enough to instantly knock out Oatchi if he is rolled over without armor upgrades.
- The Waterwraith prioritizes crushing Pikmin above all else and will even ignore the player character and Oatchi in order to do so.
- There is absolutely no way to harm it until the final sublevel, so don't even bother trying.
- Move quickly and efficiently to try and complete as much of the sublevel as possible before it shows up. If worse comes to worst, you can always return to the cave after completing it to collect the remaining treasures.
- Once defeated on the final sublevel, the Waterwraith will never respawn, even on earlier sublevels, allowing for one to take their time when collecting any treasures that were left behind.
Sublevel 1
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- Treasures:
Hoop of Passion
Ice Sword
Juicy Gaggle
Secured Satchel
Vanishing Cookie (Inside Fiery Bulblax)
- Enemies:
Honeywisp × 1
Fiery Blowhog × 2
Pyroclasmic Slooch × 2
Fiery Bulblax × 1
Waterwraith × 1 (Doesn't respawn after being defeated)
- Obstacles:
- Tools:
- Wild Pikmin:
Blue Pikmin × 10 (if 50 or less Blue Pikmin)
- Others:
Sublevel 2
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- Treasures:
Crush Nugget × 2 (Inside Bulborb)
Daughter of the Earth (Buried)
- Enemies:
Albino Dwarf Bulborb × 6
Bulborb × 1
Pearly Clamclamp × 1
Fiery Dweevil × 2- Waterwraith × 1 (Doesn't respawn after being defeated in sublevel 5)
- Obstacles:
Dirt wall x 2- Tools:
- Wild Pikmin:
- Blue Pikmin × 10 (if 50 or less Blue Pikmin)
- Others:
Castaway (Inside Pearly Clamclamp)
Sublevel 3
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- Treasures:
Child of the Earth (Buried)
Memory Fragment (Bottom...Probably?)
Scaly Custard- Enemies:
Withering Blowhog × 1
Wollyhop × 2
Anode Dweevil × 2- Honeywisp × 2
Joustmite × 1- Waterwraith × 1 (Doesn't respawn after being defeated in sublevel 5)
- Obstacles:
- Dirt wall x 3
- Tools:
- Wild Pikmin:
- Blue Pikmin × 10 (if 50 or less Blue Pikmin)
- Others:
Sublevel 4
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- Treasures:
Difficult-Choice Totem
Insect Condo (Inside Startle Spore)
Turn-of-Events Track
Velvety Dreamdrop
- Enemies:
Moldy Dwarf Bulborb × 4- Honeywisp × 1
Startle Spore × 1
Venom Dweevil × 4- Waterwraith × 1 (Doesn't respawn after being defeated in sublevel 5)
- Obstacles:
- Tools:
- Wild Pikmin:
- Blue Pikmin × 10 (if 50 or less Blue Pikmin)
- Others:
Sublevel 5
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- Treasures:
Glinty Circular Disc (Inside Waterwraith)
Noble Goo (Buried)
- Enemies:
Mitite × 1 (Only if Waterwraith was killed in an earlier visit)- Waterwraith × 1 (Doesn't respawn after being defeated in sublevel 5)
- Obstacles:
- Tools:
- Wild Pikmin:
- Blue Pikmin × 5 (if 50 or less Blue Pikmin)
- Others:
- Castaway
Candypop Bud (Purple) × 2
Gallery
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Names in other languages
| Language | Name | Meaning |
|---|---|---|
 Japanese |
深海の城? Shinkai no Shiro |
Deep Sea Castle |
 Chinese(traditional) |
深海之城 Shēnhǎi zhī Chéng |
Deep Sea Castle |
 Chinese(simplified) |
深海之城 Shēnhǎi zhī Chéng |
Deep Sea Castle |
 Dutch |
Onderwaterburcht | Underwater castle |
 French |
Fort englouti | Engulfed fort |
 German |
Unterwasserburg | Underwater Castle |
 Italian |
Castello subacqueo | Underwater castle |
 Portuguese |
Castelo abissal | Abyssal castle |
 Spanish |
Castillo abisal | Abyssal castle |
Trivia
- This cave is a direct homage to Submerged Castle from Pikmin 2, taking direct inspiration from both the original cave's mechanics and layout. In fact, many of the sublevel layouts are actually direct recreations of the Submerged Castle's sublevels. However, there are some notable differences:
- No sublevel hole is clogged. A number of the exits are protected by dirt walls or sticky mold instead.
- In sublevel 2, a single adult Bulborb patrols the sublevel, followed by a gaggle of Albino Dwarf Bulborbs, a reference to the Bulbmin in the original cave. A Pearly Clamclamp also houses the Castaway at the end of the pipe section; in Pikmin 2, the Chocolate Cushion or Confection Hoop are in this spot, out in the open and unguarded.
- Sublevel 3 lacks any Anode Beetles. Replacing them is a single Joustmite. It also lacks the singular Ivory Candypop Bud.
- Sublevel 4 appears to lean more towards a focus on poison as opposed to the original's emphasis on explosive obstacles and enemies. To this end, many of the bomb rocks and Volatile Dweevils have been replaced with poison-themed enemies such as Moldy Dwarf Bulborbs. Notably, there are a handful of Venom Dweevils that hold bomb rocks atop their heads, as a reference to the Volatile Dweevils in the original sublevel.
- All sublevels have safe zones marked by green floors where the Waterwraith can't reach.
- The original music that plays in Submerged Castle doesn't play at first. It slowly fades in as the Waterwraith's arrival approaches until it takes over the Engulfed Castle's ambient track. It doesn't play at all after the Waterwraith has been defeated, as it no longer shows up in the cave.
- After the Waterwraith is defeated, the player can unlock the cave's exit above ground, allowing them to enter the cave with other types. The Waterwraith will also never respawn when defeated, allowing one to take their time on return visits, whereas it respawned regardless in Pikmin 2.