Editing World 7-4 (Super Mario Bros. 3)

{{italic title|id=yes}}
{{image|more=yes|Needs in-game screenshot from the original NES version}}
{{level infobox
|image=[[File:SMAS SMB3 World 7-4 Screenshot.png]]
|code=World 7-4
|world=[[Pipe Land]]
|game=''[[Super Mario Bros. 3]]''
|limit=300 seconds
|before_alt=
|before=[[World 7-3 (Super Mario Bros. 3)|<<]]
|after=[[World 7-5 (Super Mario Bros. 3)|>>]] [[World 7-Fortress 1|>>]] [[World 7-Piranha Plant 1|>>]]
|secret=
|track=Underwater BGM
|sample=[[File:Underwater Theme Super Mario Bros 3.oga]]
}}
'''World 7-4''' is the fourth level of [[Pipe Land]] in ''[[Super Mario Bros. 3]]''. It becomes accessible after the player has cleared [[World 7-3 (Super Mario Bros. 3)|World 7-3]] and its own completion unlocks {{world-link|7|fort|World 7-Fortress 1}} 1 and {{world-link|7|piranhaplant|World 7-Piranha Plant 1}} 1. Hardest underwater level ever! Second hardest level in game besides 8-Airship! Hardest pipe maze level, closely tied with [[World 7-Fortress 2|7-Fortress 2]]!

==Layout==
The player starts next to some [[Warp Pipe]]s, which lead to the underwater section of the level. Before entering the pipe and if the player is powered-up with a flight item, the player can fly over the large structure to the right and find two [[1-Up Mushroom]]s. 

Entering the Warp Pipes will take the player to an autoscrolling underwater location and several [[Spiny Cheep Cheep|Spiny Cheep-Cheep]]s will move through the barriers throughout the start of the level and [[Lava Lotus]]es placed on the ground. Shortly after the first [[? Block]], [[Big Cheep Cheep|Big Bertha]]s and [[Blooper Nanny|Scattering Bloober]]s will start appearing, with Big Berthas usually placed in confined areas and Scattering Bloobers usually in open ones. Around the point when the first Scattering Bloober shows, the stage will start scrolling up then resume moving horizontally through a group of [[Jelectro]]s that slightly bob up and down, with another Big Bertha and two Scattering Bloober at the end of the group. Spiny Cheep-Cheeps will resume appearing throughout the rest of the level and player will encounter another Big Bertha and one final Lava Lotus before the pipe leading to the [[Goal (Super Mario Bros. 3)|goal]]. 

==Enemies==
{|border=1 cellspacing=0 cellpadding=3 style="border-collapse:collapse"style="text-align: center"
!Name
!Count
|-
|[[File:SMB3 Spiny Cheep Cheep.png]]<br>[[Spiny Cheep Cheep|Spiny Cheep-Cheep]]
|13
|-
|[[File:LavaLotus.gif]]<br>[[Lava Lotus]]
|3
|-
|[[File:SMB3 Big Bertha.png]]<br>[[Big Cheep Cheep|Big Bertha]]
|3
|-
|[[File:SMB3 Baby Cheep.png]]<br>[[Baby Cheep]]
|3
|-
|[[File:SMB3 BlooperNanny.gif]]<br>[[Blooper Nanny|Bloober with kids]]
|3
|-
|[[File:SMB3 BlooperBaby.png]]<br>[[Blooper Baby]]
|12
|-
|[[File:Jelectro.gif]]<br>[[Jelectro]]
|29
|}

==Level statistics==
*[[List of power-ups|Power-ups]]: 2 ([[Super Mushroom]]s or [[Fire Flower]]s)
*[[1-Up Mushroom]]s: 2
*Secret areas: 0

{{SMB3 levels}}
[[Category:Aquatic areas]]
[[Category:Super Mario Bros. 3 levels]]