Four Emperors Saga
Whole Cake Island Arc
The Sanji retrieval team sailed into the Hot-Hot Sea on their way to Whole Cake Island, and the heat added to their suffering from starvation. Monkey D. Luffy caught an Armored Stonefish from the sea, but was severely poisoned from eating its skin. The team sailed out of the sea in chaos as Luffy was on the brink of death.