

This will lead to another underground room with a lot of water-filled pits and more pipes with Piranha Plants. To access the other Warp Zone, the player must go down the first of the two pipes with a Piranha Plant in it. (This can be done by using the moving platforms to get onto the ceiling.) Past this pipe, the player will find two more pipes with Piranha Plants in them, and then a staircase leading to a World 2 Warp Zone. Both can be accessed by going past the pipe leading to the surface. There are two more Warp Zones near the end of the level. If the player climbs this vine, they will enter an area that has a Warp Zone leading to world 3.

If the player jumps on top of an invisible coin block, she/he can make a vine appear by hitting the brick directly on the right.

To the left of the first set of pipes and sinking downward, the player will pass a few more Bloobers and two Lava Lotuses before swimming back upward, though the player can also jump over the pipe above the water to reach a hidden power-up. The level begins in an underwater area with Bloobers and pipes producing current, and falling through the chasm to the left will bring the player to a power-up. 3, unlocked by clearing World 2- and its own completion unlocks World 3-2. World 3-1 is the first level of Water Land in Super Mario Bros.
