Dive Into Deep Waters

Yossi and Kevin grew really close during this journey and thus decided to stay together and continue rafting on the river while it was decided that Karl and Marcus would go by foot. Unfortunately, a rock struck their raft and the boat capsized. Luckily, Kevin could make up to the shore but the currents were too high that he could not reach up to ever-adventurous Yosseph and he went down the river. Did he survive?