Keep your head under water so that they can’t see you

You breathe in and get your head under water. Distortedly you hear the voices of the two men coming down to the shore. They must see your clothes. Crap! You totally forgot your clothes.

You try to stay calm and then you hear the voices fade. You wait a few more seconds, then you gotta breathe again and so you emerge. Your clothes are gone. And so is your sword.