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One is likely the next crucial step in finding the plane's black box. it's controlled from the surface using this joy stick. has lights to illuminate the stark black of the ocean deep. cameras transmitting back footage in realtime. and high frequency sonar to combat the notoriously difficult visibility in the area of the indian ocean where the plane is believed to be. but most importantly, the r.o.v. has robotic arms called manipulators. >> has jaws that you can open and close. >> they are essentially mechanical hands able to retrieve objects from the ocean floor. >> extend and retract. >> a s...

So i can do schedules and budgets and even menu changes. but it's fun, too -- with touch, and tons of great apps for stuff like music, 'cause a good playlist is good for business. i need the boss's signature for this. i'm the boss. ♪ honestly ♪ i wanna see you be brave mission for the bluefin-21 sonar. we learned that the ocean floor is at 4600 meters in the search area. 100 meters deeper than they expected. and we learned that the search is happening where the second

This is multibeam. they are using side-scan sonar as the primary search mechanism. it will emit sound. as it bounces off of the sea floor, the sonar receives that sound and uses the reflection from the sea floor to build an image of what's on the sea floor is. >> is it easier to do deeper in or higher up. >> it comes out good when you are deep. you have a nice stable platform and the sonar imagery can be crisp. the challenge is getting that sdoe sonar down deep. that is difficult. you have to put it on a vehicle and it has other components and that's where the challenge is. >> let's look at wh...

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Down. the second problem was an oil leak. the searchers say it was no big deal and they fixed it and sent it back down. in all they covered 35 square miles of the ocean floor down there. and once they've downloaded this latest data they'll send it down again. >> in terms of analyzing the data no information about what they got or what they saw on this third trip, right? >> not yet. we -- they do tend to release it to us reasonably quickly. the first two said nothing of significance in the data. the first time they went down there, that is the area they really want to search and it was cut shor...