If I was obscenely wealthy I'd do the same for the seas and oceans, there's got to be so many fascinating wrecks out there as well as natural formations we know nothing about yet that sonar could pick up. Shipwrecks often have a limited lifespan for things to be preserved too, for example there's very little left of Lusitania's wreck that resembles a ship any more just a rusty debris field.
Saw Sarah Parcak speak on this at her book launch @ The Explorer's Club (https://www.amazon.com/Archaeology-Space-Future-Shapes-Past/...). The current, viable remote observation approach for shipwrecks is to use satellite photos of sand plume disturbances near beaches to hint at underwater features worth further exploration.
