A Croatian winemaking duo have garnered global fame for their signature winemaking technique—aging grape bottles 20 meters below the surface of the Adriatic for 700 days, where in darkness and silence, the liquor absorbs accents of the sea. Now, they’re inviting customers to experience this undersea wine cellar, diving for their own bottle. Ivo Šegović, 38, and Edi Bajurin, 52, partnered up in 2009 to form Edivo Vina Underwater Wine to combine their passions for diving and winemaking into a single experience. “We wanted to make ‘sea wine’ as a gift for our friends and families,” the pair told The Epoch Times. “After some time, we saw that we were on a good path for making a business of it.” Doing everything themselves—from exploring submerged pressures and temperatures to researching the right location for the liquor—they found an ideal site in the Croatian Bay of Mali Ston, which maintains a constant temperature of 14 …