continues, divers as well as ships equipped with sonar technology are headed to what appears to be the crash zone to help find larger pieces of the plane which could be somewhere near the bottom of the ocean. cnn's tom foreman is live in the virtual room to show us how this ocean search will probably play out. tom? >> jake really what we're talking about is three levels of searching going on. we know where the plane took off and where it was headed and where it disappeared and now we know where they found debris. we also know that particularly in these stormy conditions there are very strong currents out in here that have to be considered in terms of what they have done to the first layer of search. the surface layer. let me explain why that makes it a difference here. if you're talking about the surface of the water, where you have wind blowing and currents at work everything can move around hour by hour by hour. the lightest things can move the most. it serves a purpose because it helps point you below the water