Brad Adams, co-founder of Subsea Estate in Western Australia, has just retrieved vats of his latest wine from the seabed just off the coast of Augusta.Partnered with wife and co-founder Jodee Adams and chief wine maker Emmanuel Poirmeur, he is creating a product unique in the southern hemisphere.For the last two years, Subsea Estate has produced Semillon and Shiraz that has undergone its secondary fermentation 15 meters deep in the Southern Ocean.The idea was originally inspired…