Courtesy of Messy Nessy Chic and WOWSA.

First photo shows swimsuits from mid-1920s Vogue Magazine that touted “the newest thing for the sea is a jersey bathing suit as near a maillot as the unwritten law will permit.”

Second photo shows one-piece swimsuits from the 1930s.

Third photo shows from masters swimmers at the 2016 Barbados Open Water Festival in colorful swimsuits.

Fourth photo shows the modern-day Mighty Mermaids: 60-year-old Nancy Steadman Martin, 60-year-old Christie Plank Ciraulo, 56-year-old Jenny Cook, 57-year-old Tracy Grilli, 58-year-old Karen Einsidler, and 58-year-old Veronica Hibben.

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