The I'm A Celebrity... Get Me Out Of Here! campmates have split in to two 'tribes' as they compete against each other to win immunity from the first elimination.
Yesterday, the group was told that the females would become the 'Galah tribe', while the males would form the 'Wombat tribe'.
The tribes will go head-to-head in three challenges, with the winners of each getting to choose one of the losers to join them.
The team that has the most members will have an advantage going in to the fourth and final challenge, with the overall champions become exempt from the first public vote off.
Two members of each tribe were picked to face the first task, 'Poles Apart' - with Kendra Wilkinson and Melanie Sykes playing for the girls, and Jake Quickenden and Tinchy Stryder representing the boys.
Each player had to hold on to two poles propping up buckets above their heads. If they lost grip of a pole, the bucket would topple, covering them in slime and jungle critters. The last one standing would claim victory.
It was the girls who got off to the worst start, with Melanie and Kendra each losing a pole in quick succession. Tinchy then evened up proceedings by dropping both of his poles, before Kendra lost her second.
This left Jake and Melanie to lock horns, but a klaxon soon sounded to end the game, meaning their battle came down to a tie-breaker question.
The pair was asked how long they had held their buckets for, with Mel guessing one hour and 25 minutes, while Jake answered one hour.
In fact, the challenge clocked in at one hour and 12 minutes - and as Jake just came closest to the correct time, he was declared the winner.
Melanie was unhappy with the result, reacting: "I was so gutted I actually wanted to cry."
However, Melanie and Jake later became teammates when the victorious Wombat tribe decided to nick the TV presenter from the Galahs.
The immunity drama continues in tomorrow night's episode at 9.00pm on ITV.