"The Little Mermaid" may have been a Hans Christian Andersen fairy tale, but for some people, it's the real deal. We talk to people who perform as mermaids and mermen in aquariums around the world. How do you swim with a tail encasing your legs? How do you swim with manatees, sting rays, and sharks? The mermaid conference, MerCon, comes to The Silverton on Aug. 12-13. We talk to a former Olympic synchronized swimmer, a former Shamu trainer, and a mermaid costume designer about what life under the sea is really like.