Underwater City

Underwater City is the ??? world in Plants vs. Zombies 2. The world is based on Atlantis City. 
This world is based on the Atlantis City, taking place underwater in a unspecified location. The timeline of this world takes place in 1950s, due to the presence of Submarine Zombie.
Underwater is served as the main environment modifier of this world. All land plants (except aquatic plants such as Guacodile and SeaFlora, etc...) will drown after a period of time unless an Oxygen Algae is planted. With the exception of Guacodile, the underwater mechanic also triggers several aquatic plants' water abilities (i.e. SeaFlora, Electric Peel, etc...)
Darkness is also served as the secondary environment modifier starting from Day 5. At the start of the level the lawn will be normal as usual but as time goes on, the lawn will start slowly going dark until the lawn goes completely dark. The darkness mechanic works similarly to fog from the original game, except the said mechanic covers the whole lawn but any plants can be used to illuminate, but on its own tile only (using Shine Vine is recommended to light up areas.) There is also a new power up exclusive to this world called Power Shine, introduced in this level that temporarily illuminates the whole lawn for 30 seconds, costing 1200 coins to use.
Other environment modifiers can appear in this world include pothole puddles, which prevents land plants from being planted unless there's a Lily Pad planted as well as allows Tangle Kelp to be planted. This world also has a surprise attack called "Whirlpool!" which behaves identical to Ancient Egypt's Sandstorm! and Frostbite Caves' Snowstorms except the whirlpools can deflect solid projectiles as well as knocking out any plants upon contacting.
While they are still allowed to use in this world, majority of Pepper-mint plants are affected in this world, causing their flames to get extinguish:
*Fire Peashooter and Pepper-pult will become costlier Peashooter and Pepper-pult, respectively. Fire Peashooter will immediately extinguish to Peashooter if used in this world. Wasabi Whip will become Bonk Choy but with slightly longer range. Torchwood will become a 175 sun wall plant that has less health than a Tall-nut.
*Snapdragon, Jack O' Lantern, Jalapeno, Pyre Vine, Inferno's attacks are rendered useless, turning them into harmless stream of bubbles.
*Hot Date can still attract zombies but its explosive ability is rendered useless, Lava Guava's lava puddle only lasts 1.5 seconds but still able to damage zombies in 3x3 area. Meteor Flower's attack no longer creates lava puddles.
Electric Peel and Seashooter are premium plants tied to this world, released for Expedition A and Expedition B, respectively.
==Game description==
Make your way through these water-ridden depths where the light is low and the zombies are plentiful! Use your Oxygen Algaes and Sea Pickles to let your plants survive so that they can throw these zombies to the shore!
==Plants==
=== Regular Plants === 
*Oxygen Algae: Creates a 3x3 oxygen around it for land plants. Obtained after completing Day 1.
*Shine Vine: Boosts sun production of sun producing plants in addition of illuminating in 3x5 area. Obtained after completing Day 5.
*SeaFlora: Fires piercing bubbles down her lane. When planted on water or underwater, fires piercing bubbles in three lanes. Obtained after completing Day 11.
*Jellilyfish: Slows down zombies walk through her and has a chance to stun them. Can be boosted by electric attacks. Obtained after completing Day 17.
*Bubbleberry: Creates bubbles that can send zombies back tiles. Lighter zombies go farther than heavier ones. Obtained after completing Day 23.
*Dried Kelp: Dried Kelp quickly shoots piercing seaweed at zombies, however, when planted above water, Dried Kelp will now become dry, giving it a bit more health, and will shoot slower, more heavy damaging seaweed bits. Obtained after completing Day 27.
===Premium Plants===
*Electric Peel: Shoots a peel that pierces through all zombies in 4 tiles in front of it twice, damaging zombies along the way. When planted on water or underwater, attack will create electric tiles.
*Seashooter: Shoots aqua peas at zombies when on land that can extinguish fire zombies. Shoots stream of water that pierces up to five zombies when on water/underwater which can slightly push back zombies if attacked long enough.
==Zombies==
*Lost Diver Zombie: Swims slowly, ignoring plants and its scuba helmet provides it high resistance. When it comes close to a Oxygen Algae or a Shine Vine, it will crash itself towards in it, killing the said plant instantly but also itself. Magnet-shroom can be used to instantly kill it. First seen on Day 3.
*Submarine Zombie: Submarine Zombie moves slowly and will sometimes shoot torpedoes at plants, dealing heavy damage and pushing every zombie in front of it farther. Lights up the area in front of it. First seen on Day 9.
*Trident Zombie: Throws a trident when encounters a plant in front him four tiles, in which the trident can instant kill the plant it hits and acts as a blocker. First seen on Day 17.
*Squid Rider Imp: Moves quickly across the lane. The squid also creates ink cloud in its tile and adjacent tiles, rendering other zombies invulnerable to all attacks while inside the ink cloud. First seen on Day 21.
*Zombie Dolphin: Zombie Dolphin swims quickly, pushing all zombies forward 1.5 tiles and then knocks the first target out of the lawn before swimming slowly. First seen on Day 28.
*Zombot Electrortex Krakentron: The terror from the depth of ocean.
==Levels==
There are a total of 31 levels and 1 boss battle to play in Underwater City, as well as introducing ??? new plants (one of which returns from a previous game) and ??? new zombies (??? of which returns from a previous game).
===Main Levels===
Day	Plants 	Zombies	Flags	Notes 	Prizes*
1 	Choice with 	 	One 	 	
2 	Choice 	 	Two 	 	
3 	 	 	Three	Special Delivery level 	
4 	Choice 	 	Two 	 	
5 	Choice with 	 	One 	Introduction of Darkness gimmick 	
6 	 	 	Two 	Locked and Loaded level 	
7 	Choice with 	 	Three	 	
8 	Choice, 4 endangered 	 	Two 	Save our Seeds level 	
9 	Choice 	 	Three	 	
10 	 	 	Four 	Special Delivery level
Introduction of Pothole Puddle 	
11 	Choice with 	 	Three	 	
12 	Choice 	 	Two 	Objective: Survive without any lawnmowers 	
13 	Choice 	 	Two 	Objective: Survive without planting on Dave's Mold Colonies.	
14 	 	 	Three	Locked and Loaded level 	
15 	Choice 	 	Four 	 	Note
16 	 	 	Three	Special Delivery level
Objective: Survive without any lawnmowers	
17 	Choice with 	 	Two 	Introduction of Whirlpool! surprise attack 	
18 	Choice with 	 	Two 	Objective: Don't lose more than 3 plants 	
19 	 	 	Two 	Special Delivery level 	
20 	Choice with ; 2 endangered 	 	Two 	Save our Seeds level 	
21 	Choice 	 	Four 	 	
22 	 	 	Three	Locked and Loaded level 	
23 	 	 	Three	Special Delivery level 	
24 	Choice 	 	Four 	 	
25 	Choice 	 	Three	Objective: Survive without planting on Dave's Mold Colonies.	
26 	 	 	Four 	Special Delivery level 	
27 	Choice except for free and sun-producing plants	 	Two 	Last Stand level 	
28 	Choice with 	 	Four 	 	
29 	Choice, 3 endangered 	 	Three	Save our Seeds level 	
30 	Choice with 	 	Four 	Objective: Produce at least 4000 sun.
Objective: Survive with most plants picked for you.	
31 	Choice with 	 	Five 	 	
32 	 	 	N/A 	Boss Battle
Darkness gimmick does not appear in this level. 	Trophy
*Prizes that are not money bags are unlocked only first time.
=== Poseidon's Domain ===
Poseidon's Domain is Underwater City's Endless Zone. As the player progresses through higher levels, more pothole puddles can appear in this level, preventing players from planting land plants as well as the more amount of whirlpools surprise attack. Lost Diver Zombie, Submarine Zombie, Trident Zombie, Squid Rider Imp and Zombie Dolphin are dangerous enemies in this Endless Zone.
The player starts this Endless Zone with Oxygen Algae, Shine Vine, SeaFlora and Wall-nut.
==Gallery==
File:UnderwaterCityLogoNew.png|Logo (credit to ThisIsEmius)
File:UnderwaterCityArtwork.jpg|Part 1 title screen
File:UnderwaterCityArtwork2.jpg|Part 2 title screen
File:UnderwaterCitySeedPacket.png|Underwater City seed packet
=== Old ===
File:Underwater City Lawn.png|An empty lawn before the remake
File:Underwater City Logo.png|Logo (old)
File:Underwater City Part 2 Teaser.png|Part 2 artwork (old)
==Trivia== 
*This world is a collaboration between Boston Pineapple and Asterplant.
*Due to the unique nature of this world, all zombies (with the exception of Mermaid Zombies, Imp Mermaid Zombie, Deep Sea Gargantuar and Trident Zombie) will never appear in Piñata Party, Arena and Penny's Pursuit.
*Several plants and zombies got replaced during the recreation of this page:
**The most notable one is Sea Pickle got replaced by Shine Vine (with an added ability of illuminating in 3x3 area) due to the fact Sea Pickle got deleted because of its blatant Minecraft reference.
**Seashooter got replaced by SeaFlora.
**Seads and Cropedo got replaced by Electric Peel and Aqua Vine, respectively.
**Lobster Imp and Trench Gargantuar got replaced by Imp Mermaid Zombie and Deep Sea Gargantuar from Big Wave Beach, respectively.
*All plants, with the exception of Shine Vine can survive without the aid of Oxygen Algae.
Category:Worlds
Category:Underwater City
Category:Boston Pineapple's Stuff
Category:Plants vs. Zombies 2 areas
Category:Areas
Category:Underwater Worlds
Category:Aquatic Worlds
Category:Uncleared page