Etsy seller Monika Naumann makes mermaid tails that you can wear while swimming!
These stunningly realistic looking Mermaid Tails were inspired by my 3 daughters and their love of all things Mermaid! They are created to fit your unique size and include a comfortable, durable and sturdy custom made mono-fin. They are made to SWIM IN as the material used is top of the line swim fabric. Colour currently available are; green, red, blue, orange and fushia-pink. All colours are all very sparkly and reflective, and look beautiful, when worn in and out of the water. Make a girls Mermaid dreams a reality with a gorgeous custom made tail. A special and unique gift that will bring happiness and fun times to all who wear it!
Link -via Laughing Squid