When Wario uses the turtle to get past the currents, the Muddee appears and scares the turtle away, and before the turtle runs away, Wario has to climb the grillage or he will fall into the currents. The Muddee's main attack is to jump from the water to hit Wario with his spiked tail.
To defeat him, Wario has to use his Ground Pound on his body, but never touch his spiked tail.
When hit enough times, he will fall and the turtle will come back, allowing Wario to process and open the red chest. This will earn the Green Flower.
If the player replays the level after obtaining Prince Frog's Glove from Out of the Woods, the Muddee can be skipped, due to being able to swim through the current.
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