Women practice swimming with mermaid tails at AquaMermaid swimming school, a mermaid training school in Chicago, United States on March 19, 2017. Participants are fulfilling their lifelong ambitions of becoming mermaids with a new type of fitness mermaid swimming. (Photo by Bilgin S. Amaz/Anadolu Agency/Getty Images)





Women practice swimming with mermaid tails at AquaMermaid swimming school, a mermaid training school in Chicago, United States on March 19, 2017. Participants are fulfilling their lifelong ambitions of becoming mermaids with a new type of fitness mermaid swimming. With the concept the schools are able to widen the reach of mermaiding to athletes of all ages, with an atmosphere supervised by trained and certified instructors. (Photo by Bilgin S. Amaz/Anadolu Agency/Getty Images)





Women practice swimming with mermaid tails at AquaMermaid swimming school, a mermaid training school in Chicago, United States on March 19, 2017. (Photo by Bilgin S. Amaz/Anadolu Agency/Getty Images)





Women practice swimming with mermaid tails at AquaMermaid swimming school, a mermaid training school in Chicago, United States on March 19, 2017. (Photo by Bilgin S. Amaz/Anadolu Agency/Getty Images)





Women practice swimming with mermaid tails at AquaMermaid swimming school, a mermaid training school in Chicago, United States on March 19, 2017. (Photo by Bilgin S. Amaz/Anadolu Agency/Getty Images)





Women practice swimming with mermaid tails at AquaMermaid swimming school, a mermaid training school in Chicago, United States on March 19, 2017. (Photo by Bilgin S. Amaz/Anadolu Agency/Getty Images)





Women practice swimming with mermaid tails at AquaMermaid swimming school, a mermaid training school in Chicago, United States on March 19, 2017. (Photo by Bilgin S. Amaz/Anadolu Agency/Getty Images)





Women practice swimming with mermaid tails at AquaMermaid swimming school, a mermaid training school in Chicago, United States on March 19, 2017. (Photo by Bilgin S. Amaz/Anadolu Agency/Getty Images)





Women practice swimming with mermaid tails at AquaMermaid swimming school, a mermaid training school in Chicago, United States on March 19, 2017. (Photo by Bilgin S. Amaz/Anadolu Agency/Getty Images)





Women practice swimming with mermaid tails at AquaMermaid swimming school, a mermaid training school in Chicago, United States on March 19, 2017. (Photo by Bilgin S. Amaz/Anadolu Agency/Getty Images)





Women practice swimming with mermaid tails at AquaMermaid swimming school, a mermaid training school in Chicago, United States on March 19, 2017. (Photo by Bilgin S. Amaz/Anadolu Agency/Getty Images)





People practice swimming with mermaid tails at AquaMermaid swimming school, a mermaid training school in Chicago, United States on March 19, 2017. (Photo by Bilgin S. Amaz/Anadolu Agency/Getty Images)