Super Mario Bros 3 Walkthrough World 3: Water Land - Ocean Side

September 12, 2016 (Last Updated: ) | Reading Time: 10 minutes

This Super Mario Bros 3 walkthrough is divided into 8 total pages.

You can jump to nearby pages of the game using the links above.

World 3: Water Land - Ocean Side

Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 127
Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 127

3-1: The Frog Suit being put to the test. Press any cardinal direction to swim in that direction then press A to swim faster.

Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 128
Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 128

As Frog Mario, you can swim against the currents coming out of some pipes. This is a good way to find secret areas in some levels.

Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 129
Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 129

Meet Blooper/Gesso. It will try to swim into Mario and some of them have varied attacks.

Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 130
Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 130

Meet Lava Lotus/Switchuka. It waits on the surface floor and spits a few balls of lava that rain down. Avoid those lava balls at all cost.

Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 131
Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 131

Meet Blooper Nanny/Kozure Gesso. Anyone who gets too close and the nanny sends the kids after you.

Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 132
Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 132

This hidden block contains a 1-up.

Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 133
Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 133

3-2: You want to stay at the top of the water as much as possible but I want to demonstrate something real quick.

Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 134
Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 134

If you are Frog, Tanooki, or Hammer Mario and you get hit, I already explain that you revert to small Mario in the Japanese version but for these three suits, you see the suit fly off.

Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 135
Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 135

If you get caught in the water, you can hop onto a Cheep Cheep for leverage to safe ground but be extra careful.

Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 136
Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 136

Here is a 1-up in the left brick.

Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 137
Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 137

The power-up is located in the? block.

Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 138
Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 138

3-3: Uh oh! Here comes trouble. This level rises and sinks in intervals. We meet Big Boss Bass/Kyoudai Pukupuku o-> (male symbol). It is capable of eating Mario even if he is large when he is within range of his mouth. Getting eaten result in instant death.

Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 139
Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 139

The rotary lifts have a tendency of spinning you into dangerous situations. Don't stand on one too long.

Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 140
Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 140

You can use these ice blocks to attack Big Boss Bass.

Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 141
Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 141

Near the end of the level, Kill Big Boss Bass with a fireball then swim to the very right.

Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 142
Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 142

There is a 1-up here but be sure to kill Big Boss Bass on the way back.

Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 143
Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 143

3-Castle: The Roto Disc and Dry Bones are working together to make Mario's life hell.

Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 144
Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 144

Enter door number 5 first.

Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 145
Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 145

There is a 1-up here. Get it then get out if you managed to stay on the platform.

Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 146
Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 146

Regardless of what happens, when you are in the main room. Enter door number six and you end up here with the Boom Boom room above and to the left.

Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 147
Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 147

This Boom Boom flies during phase 2.

Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 148
Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 148

3-Hammer Bros Duo. Use fireball when they are on the floor or bop them from below.

Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 149
Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 149

You get a Hammer for your prize.

Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 150
Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 150

Nearby is a place you can smash with your hammer. Do so and take a ride on the canoe to some extra Toad houses and slot sections.

Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 151
Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 151

Another Toad house in the upper section.

Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 152
Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 152

Nothing special here but a glimpse of where you will fight your third boss later on. Notice how the map is shaped like Japan.

Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 153
Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 153

3-4: Get the power-up here if needed.

Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 154
Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 154

Slide down this slope and at the end...

Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 155
Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 155

Jump where you see it curve up to clear the moat.

Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 156
Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 156

Here is Lakitu/Jugem. Here he throws green Spiny Eggs/Paipos at Mario. The green ones stay in egg form when hitting the ground unlike the red ones that turn into Spinies/Togezo. Get this 1-up here.

Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 157
Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 157

Fool Lakitu into throwing an egg in a different direction then slide down this slope.

Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 158
Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 158

3-5: Meet Jelectro/Shibire Kurage. An underwater jellyfish that is invincible. They usually appear in schools.

Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 159
Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 159

Meet Big Bertha/Kyoudai Pukupuku o+. She doesn't try to eat Mario like her male counterpart, Big Boss Bass, does. She will spit out a Baby Cheep/Chikkoi Pukupuku from time to time and swallow it back up. The Baby Cheep is just as deadly as the mother.

Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 160
Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 160

There is going to be a hidden 1-up underneath the right of this pipe.

Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 161
Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 161

3-6: These are Donut Lifts. Stand on them and they change color. Stay on them too long and they will fall down.

Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 162
Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 162

There will be several bricks with 10 coins in them. It's best to have Raccoon Mario for these.

Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 163
Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 163

This brick has a Super Leaf if you don't have one yet. Use a Koopa Shell to hit it.

Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 164
Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 164

Be careful here as the Rotary Lift makes it hard to land on the pipe below.

Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 165
Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 165

3-7: Meet Spike/Gabon. It will barf up a spike ball and hurl it at Mario.

Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 166
Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 166

There are some coins in this brick sequence.

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Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 167

In fact the top left one is a vine. Climb it and go left to get some coins and a P-switch.

Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 168
Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 168

Here is a 1-up among the bricks that got turned into coins via the P-switch.

Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 169
Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 169

Here is the normal exit but during the making of this guide, I missed a special exit that involved going into coin heaven and collecting a Jugem Cloud at the end of it instead the usual drop down the pipe. More on this in the Omake section.

Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 170
Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 170

3-Hammer Bros. Duo Round 2. Beat them as before.

Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 171
Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 171

You get a star.

Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 172
Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 172

3-Castle 2: The castle is underwater and yet Mario can still throw fireballs thank you science. He did the same in the first Mario too.

Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 173
Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 173

Meet Stretch/Netchi. It's a white bar where a Boo's head will pop out and move back and forth.

Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 174
Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 174

Like a dummy, I tried to swim over it and got hit.

Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 175
Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 175

Another Boom Boom fight. The blocks can hinder you.

Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 176
Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 176

3-8: Here we go again. This time the water sinks even deeper and that means the risk of being eaten has elevated.

Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 177
Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 177

Use the vines to keep you safely on dry land.

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Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 178

Don't forget to kill Big Boss Bass when the opportunity comes.

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Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 179

Wait for the land to rise before getting these coins. You need all coins to get a White Toad house.

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Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 180

Hit the P-switch in that area too to get these coins.

Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 181
Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 181

There is also a 1-up hidden around here.

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Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 182

3-9: The upside down plants are not restricted by the vicinity rule like the right-side up counterparts and Bullet Bills. They come out no matter one. Same with the sideway ones you will meet later on.

Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 183
Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 183

Meet Bob-Omb/Bomb Hei. The only enemy that came from Super Mario Bros 2 USA/Doki Doki Panic in Japan. For now, it won't explode until a few seconds after you stomp on it. You can kick Bob-Omb while he is stunned to kill other enemies when it explodes.

Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 184
Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 184

Be sure to clear out any enemies nearby first preferably with Raccoon Mario then duck down on this white block until you fall through.

Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 185
Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 185

Make it to the pipe while still in the background and go down. You are underwater and invisible. You are invincible here too as long as you are invisible.

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Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 186

Here is the end pipe to go up.

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Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 187

3-Airship: Yes I'm crazy for tackling this Airship level in a Frog Suit but there are some things that I don't want to wait until the Omake section thus I even show three of the Kings transformed back to their old selves.

Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 188
Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 188

The cannons here need to be avoided carefully.

Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 189
Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 189

It gets more dangerous when the cannons start closing in and there is a Bullet Bill waiting to fire.

Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 190
Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 190

Ignore the screws and wait for the jet fuel to stop before moving safely.

Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 191
Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 191

Wendy O. Koopa attacks with candy rings. Avoid their trajectory as you stomp on here three times.

Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 192
Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 192

Water Land/Ocean Side complete.

Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 193
Super Mario Bros 3 Walkthrough - Super Mario-Bros-3 193

There are special messages if you beat a level with Frog, Tanooki, or Hammer Mario.

Japanese: arearesonnasuga tanikaera reteshimatte.... konotsuede motono sugatani modoshi tesashiage youka?

English: Oh me, oh my. You have been transformed.... Shall

More Super Mario Bros 3 Walkthroughs

This Super Mario Bros 3 walkthrough is divided into 8 total pages.

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