Pipeline Boom Lagoon, or World 
Flower-7, is the seventh level of World Flower in Super Mario 3D World. This level is unlocked by completing Faster Fort Fire Bros., and its own completion unlocks Towering Sunshine Seaside.
Layout
This level is a redesigned version of World 3-5, Pipeline Lagoon. The level begins in the small beach area from the original level, though there are four ? Blocks that become Cannon Boxes when hit, and there are Madpoles in the water that replace the Goombas. Sand sculptures of two Goombas and Bowser are also found. A Warp Pipe leads to a section of the ground leading to a body of water, and more Madpoles are found on the surface of the water. Some crates and a Goomba sand sculpture are found on top of a cliff. A Goomba sand sculpture containing Mini Goombas inside and two more Cannon Boxes are found before the underwater section. Rammerheads and Bloopers are encountered in the underwater section, replacing the Cheep Cheeps and Porcupuffers from the original level. A Warp Box is found on a platform above the water, leading to the Checkpoint Flag.
Another underwater section follows the Checkpoint Flag, where more Bloopers are found. Spike Blocks appear as obstacles in the area. The sunken ship from the original level is found, followed by a section containing a Spike Block and Rammerheads leading to a Warp Pipe. Three sections of Rock Blocks are found on the wall, and the third contains a Clear Pipe that leads to a section with more Bloopers. A platform is found above the water, where Coin Coffers and another Warp Pipe are found. Both Warp Pipes leads to the area with the Goal Pole, with the one located through the Clear Pipe leading to a raised platform.
Green Stars
- Green Star 1: Near the end of the first underwater area, the first Green Star is behind a wall of Rock Blocks that must be destroyed with a Cannon Box.
- Green Star 2: In the second underwater area, the second Green Star is located above the first three Spike Blocks lies the second.
- Green Star 3: Deep below the second Green Star, the player must destroy a wall of four Rock Blocks with a Cannon Box and then activate the Green Star Ring behind it, then collect all eight Green Coins to get the third Green Star.
Enemies
Names in other languages
| Language | Name | Meaning | Notes |
|---|---|---|---|
| Japanese | 砲台の入り江[?] Hōdai no irie |
The Cove of the Cannons | |
| Chinese | 炮台海灣[?] Pàotái Hǎiwān |
Cannon Cove | |
| Dutch | Bommenbeach[?] | Bomb beach | |
| Italian | Baia dei cannoni[?] | Cannon's bay | |
| Portuguese | Mar de canhões[?] | Sea of cannons | |
| Spanish (NOA) | La laguna de los cañones[?] | The cannons' lagoon | |
| Spanish (NOE) | La cala de los cañones[?] | The cannons' cove |