A recent interagency federal research cruise on the University of Delaware’s research vessel Hugh R. Sharp, which sailed along the Mid-Atlantic margin to characterize methane hydrate deposits, yielded 2,000 km of Multi-Channel Seismic (MCS) System data that confirmed previously detected methane hydrates and discovered new deposits. NETL supported the cruise. A methane hydrate is a cage-like lattice of ice that contains trapped molecules of methane, the chief constituent of natural gas. If a methane hydrate is warmed or depressurized, it reverts to water and natural gas. When brought to the earth's surface, one cubic foot of gas hydrate releases up to 180 cubic feet of natural gas, making it a potentially massive new energy source. Hydrate deposits occur under Arctic permafrost and beneath the ocean floor along continental margins, like the Mid-Atlantic.