Water Land

This article is about the world from Super Mario Bros. 3. For the fourth world of Super Mario RPG: Legend of the Seven Stars, see Seaside. For the similarly named galaxy in Super Mario Galaxy, see Sea Slide Galaxy.

Template:Location-infobox Sea Side (alternatively Water Land, Ocean Side, Big Island, or the Island World) is a water-themed world, and the third world in Super Mario Bros. 3. Sea Side has nine stages, two Hammer Bros., two fortresses, five Toad Houses, five Spade Panels, and a castle. Cheep Cheeps and Bloopers are common enemies in this world, and the hard-to-dodge Boss Bass also lives here.

The Koopaling that has taken over Sea Side is Wendy O. Koopa. The real king of the land (who bears a resemblance to Mario and Luigi) resides in a castle on an island chain that is in the shape of Japan, with the castle being located where the city of Kyoto would be, the city in which the Nintendo headquarters is located.

The map of Super Mario Advance 4: Super Mario Bros. 3 suggests that it is located to the south of Desert Hill, and west of Big Island.

Level descriptions

Level	Preview	Description
World 3-1	File:SMAS 3-1.PNG	The first level is set at the bottom of the sea at night time. If the player swims down when a Blooper Nanny appears, they can access an area with many Blocks, Coins, and a block containing a 1-Up Mushroom. All 3 versions of Bloopers appear. By allowing oneself to slide through the gap in the seafloor at the very beginning of the level, the player will find a secret area with a ? Block containing a Fire Flower. After the first Blooper, Mario can jump out of the water and scale the wall, finding another secret area with a Fire Flower.
World 3-2	File:SMAS 3-2.PNG	After leaping onto the first moving platform, pushing against a certain wooden block will reveal a Starman. When invincible, all ? Blocks along the way will hold more Starmen; if not, they will contain one coin. To reach the exit, Mario must enter a pipe when the Venus Fire Trap backs into the pipe.
World 3-3	File:SMAS 3-3.PNG	This level features Boss Basses. If Mario approaches one, it will lunge at him with its mouth open, and if it eats Mario, he will instantly lose one life, even if he is equipped with an item. Even though the Boss Bass can be killed with a fireball, a new one will eventually come back. By stepping on a Koopa to the left of a Jump Block and a huge formation of blocks, the player will reveal a Switch Block, allowing Coins to appear and the power-up in the Jump Block to be grabbed more easily.
World 3-Fortress 1	File:SMAS 3-C1.PNG	This castle is a huge maze, with doors all leading to different places. The first, second, third, and fourth doors all lead to the same place: a pool of water in the basement with a ? Block concealing a power-up at the end, and two pipes that lead to the beginning of the level. The fifth leads to a secret ledge with a 1-Up in a block, the sixth to a ledge with the door to the Boom Boom battle, the seventh and eighth to the pool, but the last has a cache of coins that can be snagged by Raccoon Mario, or reached after hitting two hidden blocks on the left-hand side.
World 3-4	File:SMAS 3-4.PNG	The level begins with two Goombas walking up a small slope. They can be easily dispatched by pressing and holding Down on the D-Pad while walking down the slope. Immediately afterward, a Piranha Plant inside a pipe is stationed. A ? Block right by yields either a Super Mushroom or a Fire Flower, depending on what the player currently is equipped with. A larger slope curves down nearby, with three Goombas walking up it. A player may earn up to 99 lives by drawing the Latiku to the area where the pipe extends from the ceiling, and knocking a shell so it bounces between the two blocks on the ground. Later in the level is a pipe extending from the top of the level downwards. The pipe contains a Venus Fire Trap. A Switch Block is revealed if one of the low blocks is hit from the bottom. When pressed, many Silver Coins appear near the area of the button. Ahead are two ? Blocks, one containing a Super Leaf. Shortly after, the goal is located.
World 3-5	File:SMAS 3-5.PNG	This level introduces Jelectros, invincible jellyfish enemies, and Big Berthas, who look similar to Boss Basses, but simply shoot Baby Cheeps out of their maws. If Mario is equipped with a Frog Suit, he can go down a bubble-spewing pipe to gain access to three 1-Up Mushrooms.
World 3-6	File:SMAS 3-6.PNG	This level is force scrolled, and constantly scrolls in a certain direction. A majority of the level requires Mario to jump from platform to platform to avoid falling.
World 3-7	File:SMAS 3-7.PNG	On the stack of wood blocks Mario starts out on, the top one contains a powerup. In a later group of bricks, Mario can destroy them to reveal a 1-Up. After the first pipe, the player can grab a Koopa shell and release it at the top brick formation to grow a Magic Vine. It will lead to a series of cloud platforms, ending at a block that contains a Switch Block. There is also a hidden pink Jump Block that takes Mario to a special Coin Heaven with a Jugem's Cloud at the end.
World 3-Fortress 2	File:SMAS 3-C2.PNG	This level introduces Stretches, platforms from which Boo heads protrude. Some Stretches have Boos on one side, while others have them on both. At the end of the level is a pipe leading to Boom Boom, the stage boss.
World 3-8	File:SMAS 3-8.PNG	The Boss Bass is again present in this level. The water rises to higher levels, but Magic Vines are abundant, allowing Mario to reach safety. The solitary block later has a 1-Up, while the rest have either Magic Vines or Coins. The level later breaks into two paths, and rejoins by the end of the level. Also, if enough coins are collected in this level, a White Mushroom House with a P-Wing will appear.
World 3-9	File:SMAS 3-9.PNG	The level features a pipe that leads to a secret room containing a Frog Suit. It is also possible to do the Infinite-Up Trick (by tossing a shell between 2 bill launchers).
World 3-Airship	File:SMAS 3-A2.PNG File:SMAS 3-A3.PNG	After avoiding the many obstacles along the way, Mario will meet Wendy O. Koopa. She uses Candy Rings that bounce off walls as a weapon. After jumping on Wendy's head twice, she will start bouncing around the room, making her more difficult to jump on. After she is defeated, Mario is granted with the Magic Wand.
Hammer Bro. 1		Generally found near the Eastern most portion of the map, the Hammer Bro. (actually two Hammer Bros.) will be fought in an area with a hill to the left as well as a row of bushes extending to the right, as well as two rows of seven breakable blocks each. Defeating them will award the player with a chest containing a Hammer. If the player met the unlock conditions for the Treasure Ship, the Hammer Bro. will be replaced with the ship.
Hammer Bro. 2		Like above, the Hammer Bro. will have two Hammer Bros. to be fought, and it will have two rows of seven breakable blocks each. Depending on where the player fights them, the area may be partially submerged underwater. If the player beats them, they are awarded with a chest containing a Starman. If the player met the unlock conditions for the Treasure Ship, the Hammer Bro. will be replaced with the ship.

Canoe

If the player has a Hammer in their inventory, they can break a rock to gain access to the canoe. The player can then control the canoe across the water to an island with two Mushroom Houses and two Spade Panels and a second island with a third Mushroom House. It is possible to do the glitch in the Japanese version of the game, to do that, stay on the canoe and get a Warp Whistle. It will result in walking on water, and getting into a glitched map. It can also gain access to all the other worlds.

The Adventures of Super Mario Bros. 3

Water Land was only mentioned in one episode of The Adventures of Super Mario Bros. 3.

Sneaky Lying Cheating Giant Ninja Koopas: Bully (though speaking through Kooky's mouth due to an animation error) suggested that they could take over Water Land after having conquered Giant Land.

Nintendo Comics System

Water Land is the setting of the Nintendo Comics System story Fins and Roses, which has a heavily armed Wendy O. Koopa set up an ambush for Mario, only to be annoyed by Stanley the Talking Fish while waiting for the plumber's arrival.

Nintendo Adventure Books

In Leaping Lizards, Morton and Iggy Koopa have both set up bases in Water Land, a filthy houseboat and an underground laboratory, respectively. After the Mushroom King is transformed into a rabbit by Morton and no one can figure out how to change him back, Luigi and Toad head to Water Land to find Morton and get answers, with some of the creatures they encounter being Cheep Cheeps, Bloopers and Jelectros.

Gallery

• 

  Frog Mario swimming through Water Land
• Smb3 3-4.PNG

  Level 3-4 Map, shown without enemies
• World3SMB3.PNG

  Water Land as seen in the original Super Mario Bros. 3.

Names in other languages

Language	Name	Meaning	Notes
Japanese	ワールド３ 海の国 Wārudo3 Umi no Kuni	World 3: Ocean Country (Ocean Side / Sea Side in-game)

Trivia

• The music that plays in this land is very similar to the File Select music of The Legend of Zelda games.