They took a break on an iceberg, not far from where Polina had fallen into the sea. They saw something in the distance that startled them. It looked like another iceberg, but just to be sure, Farswimmer left Polina on the ice and swam to the floating object.
It wasn't an object. It was an animal. Farswimmer used his fat nose to push the unconscious form to Polina's icy raft. When he rolled it over, Polina saw a familiar face.