attitude. >> reporter: this is the most revealing image we have seen so far of the actual oil spill in the gulf of mexico. the short video shows robotic arms from an underwater vehicle capping one of the leaks. look closely and briefly. in the background, you can see a dark cloud shoot into the water. three weeks after the explosion, this is the only glimpse of the leak bp has released. bp is in control of the video recorded by the underwater robotic vehicles. we are told by multiple government sourceings that these cameras have captured extensive video images coming from the sight of the leak 5,000 feet under water. cnn has asked b.p. repeatedly for video of the leak. company officials will only tell us that they will look into it. environmentalist it's and scientists say b.p.'s unwillingness to share this video high latlights a bigger problem. the critics say that's a lack of transparency. aaron vials is with an