Survivors must race to remove rocks that are piled up inside the tribes boat sunken at the bottom of the ocean. Once enough rocks are removed, the tribes would race to bail out the water and paddle to shore. First tribe to reach the finish would win.
"Panicked, Desperate, Thirsty as Hell"
- Kathy Vavrick-O'Brien and Rob Mariano are the only contestants to compete in the challenge both times it was used.
- Kathy, unlike Rob, won both times.