As Team Avatar was resting in the forests outside Makapu Village, a se tu was swimming in a river, diving in and out of the water. Its actions were perceived as taunting by Sokka, who, after finding his fishline woven into a necklace by Aang, waded into the water to catch it barehanded. After a short struggle underwater, the fish was caught. When Sokka attempted to kiss the fish while mocking Aang, the se tu increased its struggles to squirm free and slapped the Water Tribe warrior against the head with its tail before plunging back into the water.