It appears Neal is the sit-out for Brains.
While Julia and Anna are sitting out for Beauty.
And in the following pic, I see Peter's shorts AND a glimpse of Debbie's bathing suit...
for comparison...
Here is Debbie's head, notice the long hair, with a buff on her head. And either her hand or Peters.
Strangely they blurred out Caleb's tattoo from this pic...
but they kept in his shorts, on this one...
You can see Nick, Michele, Anna, Tai and Julia in the following pics...
Then Tai and Anna cry...
Definitely over Caleb being med-evac'd.
But what of Peter and Debbie?