A company called 'Edico Vina' in Croatia has spent the last five years creating an underwater winery.
The company takes bottles of wine, produced at its vineyard, and stores them in clay pots called amphora's. The clay pot is then sealed shut with wax (to keep the saltwater out) and placed in cages 20 meters underwater to prevent theft. Once the aging process is complete, officials from the underwater winery will retrieve the bottles. The wine is aged underwater for two years before it is sold in a local restaurant or online.
The constant temperature of the seawater is meant to give the wine a "pinewood aroma." The wine from this underwater winery is said to taste very different from wine from a cellar. Wine from the underwater winery costs up to £270 in restaurants.