View source for Marine Tube

{{incomplete|2=Missing complete layout maps}}
{{Infobox location
|image=Marine Tube B2W2.png
|image_size=256
|type=underwater
|location_name=Marine Tube
|japanese_name=マリンチューブ
|translated_name=Marine Tube
|mapdesc=An undersea tunnel built using cutting-edge technology.
|location=Between [[Undella Town]] and [[Humilau City]]
|region=Unova
|generation={{Gen|V}}
}}
The '''Marine Tube''' (Japanese: '''マリンチューブ''' ''Marine Tube'') is an underwater location in Unova introduced in {{game|Black and White|s|4=2}}. It is a tube that connects [[Undella Town]] with [[Humilau City]] underneath [[Undella Bay]].
{{sign|bwbuilding|Marine Tube Ahead|The Walk-Through Aquarium}}

==Description==
Known as "the walk-through aquarium", the Marine Tube was built during the two years between {{game|Black and White|s}} and their sequels. It was constructed to commemorate the friendship between Undella Town and Humilau City and was designed, as stated by an NPC, "to see, not to move." When the player first arrives in Undella Town, the Marine Tube is closed for cleaning and yet to open. The cleaning is completed at the same time the player earns the {{badge|Legend}} and defeats [[Team Plasma]] in [[Opelucid City]].

The Marine Tube is a transparent tube made of 9.8 inch glass built to withstand high water pressures and contact with huge Pokémon. The tunnel was made above ground and lowered into the water. Crossing a six-mile-deep ocean trench, the Marine Tube is one of the many pinnacles of technology in the [[Unova]] region.

Plating corals and pyramid-like rocks can be seen in the water surrounding the tube. Lights have been placed outside the tube to provide visibility. There is a canyon halfway along the tube's route, the bottom of which cannot be seen. The {{type|Water}} Pokémon {{p|Alomomola}}, {{p|Basculin}}, {{p|Frillish}}, {{p|Mantine}}, and {{p|Wailord}} can be observed outside, represented with animations exclusive to this purpose. Each of these Pokémon will only appear at certain times of the day; the player can get the [[List of Medals in Pokémon Black 2 and White 2|Wailord Watcher Medal]] by spotting an elusive {{p|Wailord}}, which are common between 3:00 PM and 5:00 PM (going by the time the player entered the Marine Tube).

There are no wild Pokémon or Trainers to battle in the Marine Tube. There are no items lying around, although the self-proclaimed first fan of [[Roxie]] will give the player a [[Black Sludge]] if they show her a Pokémon holding a [[Poison Barb]].

If the player has given a man in an orange shirt a [[Fresh Water]] at [[Skyarrow Bridge]], [[Driftveil Drawbridge]], [[Tubeline Bridge]], [[Village Bridge]], and [[Marvelous Bridge]], then they will meet up with the same man here. Should the player give him another Fresh Water, then he will become rehydrated and dash back to the Skyarrow Bridge with [[Moomoo Milk|some gifts]] for the player.

==Items==
{{Itlisth|underwater}}
{{Itemlist|Black Sludge|From a female {{tc|Ace Trainer}} after showing her a Pokémon holding a [[Poison Barb]]|B2=yes|W2=yes}}
{{Itemlist|TM Normal|From a {{tc|Parasol Lady}} at the [[Humilau City]] entrance|B2=yes|W2=yes|display={{TM|42|Facade}}}}
{{Itlistfoot|underwater}}

==Observable Pokémon==
{| class="roundy" style="background: #{{locationcolor/med|underwater}}; border: 3px solid #{{locationcolor/dark|underwater}}"
|-
! colspan=2 style="background: #{{locationcolor/light|underwater}}; {{roundytl|5px}}" | Pokémon
! style="background: #{{locationcolor/light|underwater}}; {{roundytr|5px}}" | Hours
|- style="background: #fff"
| {{MSP|226|Mantine}}
| {{p|Mantine}}
| 9:00 AM - 2:59 PM
|- style="background: #fff"
| {{MSP|321|Wailord}}
| {{p|Wailord}}
| 3:00 PM - 4:59 PM
|- style="background: #fff"
| {{MSP|550|Basculin}}
| {{p|Basculin}}
| 12:00 AM - 2:59 PM and 5:00 PM - 11:59 PM
|- style="background: #fff"
| {{MSP|592|Frillish}}
| {{p|Frillish}}
| 12:00 AM - 5:59 AM and 5:00 PM - 11:59 PM
|-
| style="background: #fff; {{roundybl|5px}}" | {{MSP|594|Alomomola}}
| style="background: #fff" | {{p|Alomomola}}
| style="background: #fff; {{roundybr|5px}}" | 6:00 AM - 8:59 AM
|}

==In the manga==
[[File:Marine Tube Adventures.png|thumb|170px|Marine Tube in Pokémon Adventures]]
===In the Pokémon Adventures manga===
The Marine Tube first appeared in [[PS541]]. {{adv|Cheren}} and his students were taken there by [[Marlon]] and [[Benga]] after being rescued from [[Castelia City]], which had been frozen by the [[Plasma Frigate]].
{{-}}

==In the TCG==
This listing is of cards mentioning or featuring the Marine Tube in the [[Pokémon Trading Card Game]].

{{Cardlist/header|Related cards|Water|char=yes}}
{{cardlist/entry|cardname={{TCG ID|Boundaries Crossed|Jellicent|45}}|type=Water|enset=Boundaries Crossed|enrarity=Rare|ennum=45/149|jpset=Freeze Bolt|jprarity=U|jpnum=022/059}}
{{cardlist/footer|Water}}

==In other languages==
{{Langtable|color={{locationcolor/light|underwater}}|bordercolor={{locationcolor/dark|underwater}}
|zh_cmn=海洋隧道 ''Hǎiyáng Suìdào''  
|fr_eu=Aquatube
|de=Unterseetunnel
|it=Tunnel Marino
|es_eu=Acuatúnel
|ko=마린튜브 ''Marine Tube''
}}

{{Unova}}<br>
{{Project Locations notice}}

[[Category:Black 2 and White 2 locations]]
[[Category:Underwater locations]]

[[de:Unterseetunnel]]
[[es:Acuatúnel]]
[[fr:Aquatube]]
[[it:Tunnel Marino]]
[[ja:マリンチューブ]]
[[zh:海洋隧道]]