It felt like touching an electric pineapple. This was unlike any other stings Jaimie Monahan had received. This one felt different and it partially paralyzed her left hand. She didn’t know what to do other than to keep swimming. She is good at doing that. What was Jaimie, a campus recruiter for Deloitte Consulting, doing in the middle of a swarm of jellyfish? She is a marathon swimmer—one of the most accomplished open water swimmers in the world.