I looked at ep 2 again to see the people in the water to try to compare to the person in the water in the Ozzy pic.

It's not Jason - he has sideburns down to the bottom of his ears, which are not visible in this pic as well as scruff on his chin.

Based on the length of the hair and the color I think either Eliza or Parvati.

Ami's hair is lighter and Amanda's is longer.

The pic is definitely from a future challenge.