Seven-ish years ago, a team leader at Los Alamos by the name of Mike Houts told me they had discovered the ocean had ten to one-hundred times more water below it, than above it
There's
some water down there, but not in liquid form. The US Geological Survey hasn't heard of any significant amount of water down there:
Where is Earth's water located? Nor has it shown up on any of the hundreds of thousands, maybe millions, of seismic surveys done all over the Earth. Nor has it manifested its presence in any of the several ways that liquid water would if it were there; we've got a pretty good picture of the Earth's density as a function of depth by analyzing earthquake waves:
(linked from
Earthquakes & their Uses (Seismology).
Pretty likely you mis-heard or your source mis-spoke.