Sumo at Sea (challenge)

Survivor Sumo (officially known as Sumo in Mud, Sumo at Sea, and Kung Fu Cannibals) is a recurring challenge that originated in and was later used in later seasons.

Rules
One member from both tribes face off in an arena surrounded by either water (') or mud (' and ). Using their sandbags, or any other body part other than their hands, they must try to knock each other out of the arena.

History
In, its debut season, Koror narroly managed to beat out Ulong for immunity.

Moto won this challenge when it reappeared in.

The Heroes won this challenge when it later reappeared in.