The Sea Shepherd's anti-whaling speedboat Ady Gill has sunk after it was sliced in two by a Japanese whaling vessel during a clash in the Southern Ocean on Wednesday. Sea Shepherd founder Paul Watson told ABC News Breakfast the Ady Gill went down shortly before 3:30am AEDT while it was being towed to a French research base by the group's Bob Barker boat. "I think they were towing for about six or seven hours," he said. "Even the act of towing was taking more water on. The Japanese vessel had cut the vessel completely in half and made it unseaworthy."...