How to clear Mondo in Super Mario World for the Super Nintendo Entertainment System and Game Boy Advance.

How to Clear Mondo
This level is filled with a tide of water that pushes you from right to left. You can try to swim against the current or jump up out of the water to progress through the level.
Go to the right and there are two Cheep Cheeps that float up from the water, flop around when they reach the surface, then float back down. To the right, there is an Amazing Flyin' Hammer Bro, so dodge the hammers and try to hit the Flying Platform from underneath or stomp the Hammer Bro. There is also a pit with three Munchers in it.
To the right, there is a Cheep Cheep that swims left and right. Around this point, the tide will start moving up and down.
Get the four coins on top of the hill, then go to the right, where there is a Jumping Piranha Plant in a pipe.
To the right, there are two Cheep Cheeps, and two pits of Munchers. Above the second pit of Munchers, there is a Prize Block that contains a Cape Feather.
Next, there is an Amazing Flyin' Hammer Bro, and four Cheep Cheeps, as well as a pit of Munchers on the right, with a Dragon Coin above it.
After the pipe, there are two Cheep Cheeps and three Prize Blocks. The Prize Block on the right contains a Yoshi Egg and the other two contain coins.
Next, there are hills with two red Koopa Troopas and a Dragon Coin above the top of the hills.
Then there is a Cheep Cheep swimming above a pipe. You can go down the left pipe, but before you do, you can hit the Block between the four pipes to get the 1-Up Mushroom. Then go down the left pipe. You reach a cloudy area with a number of coins, and a Dragon Coin. You can slide down the slope if you don't have Yoshi (or you don't mind going back to get him), but be sure to jump to get the floating coins part of the way down. Then get the Dragon Coin at the end and go down the pipe.
If you want to get coins from a multi-coin block, you can go to the left, past several Cheep Cheeps and a Muncher pit, and hit the Prize Block as quickly as you can to get as many coins as possible before it turns into a Brown Block.
Then go to the right, where there are two Cheep Cheeps and a Brown Block above a Muncher Pit. There are two red Koopa Troopas to the right of the pit, and four coins on the hill above them.
Then there are four small Muncher pits and two Cheep Cheeps, followed by two long rows of Prize Blocks. The bottom row just has one coin in each Prize Block, but in the top row, the sixth Prize Block from the right contains a Fire Flower.
After that, there is an Amazing Flyin' Hammer Bro above a Muncher Pit that has two Brown Blocks above it, as well as the fifth Dragon Coin.
Go through the pipe on the right and go through the Giant Gate to complete the level.
After the Level
The path to the west will unlock and you will be asked if you want to save the game, then you can go to Outrageous.