CNN The Situation Room April 15, 2014 22:44:00
Very stiff resistance. wolf? >> excellent explanation, tom foreman, thank you. let's bring in ocean scientist ellen prager joining us from miami. that was a good explanation from tom, and i understand that bottom over there, the floor of the indian ocean where they are searching has never been mapped at all, so they are not sure what's down there, right? >> that's correct. in fact, you know, you can go on the web and bring up a picture of the bottom topography of the world ocean and it looks like we know what's there, but, in fact, that's a base map that's done from satellite and it's only alo...
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