Thirty feet under the surface of the cold, murky Baltic Sea, Brendan Foley spotted something unusual in the wreckage of an ancient ship. Foley, AG95, a marine archaeologist and researcher at Lund University in Sweden, was clearing mud away from a wooden tankard wedged beneath a tangle of firewood when the tankard began to move on its own, pulling free of the sediment and rising quickly toward the surface. Thirty feet under the surface of the cold, murky Baltic Sea, Brendan Foley spotted something unusual in the wreckage of an ancient ship. Foley, AG95, a marine archaeologist and researcher at Lund University in Sweden, was clearing mud away from a wooden tankard wedged beneath a tangle of firewood when the tankard began to move on its own, pulling free of the sediment and rising quickly toward the surface. Archaeology Phys.org – latest science and technology news stories