Photo taken on July 28, 2011 shows the submersible Jiaolong (L) floating in the sea. The Chinese manned deep-sea submersible Jiaolong returned to its attendant ship at about 12 p.m. Thursday Beijing time after reaching a depth of 5,188 meters in its third test dive in the morning. The submersible took photos, shot video, and made a topography scan at the ocean floor in the eastern Pacific for about 3.5 hours. [Xinhua]