sulfuros polimetálicos
This circa 1997 photo released by Woods Hole Oceanographic Institution shows the robotic arm of an unmanned aquatic vehicle reaching toward a hydrothermal vent in the east Pacific Ocean far off the coast of Chile. New technology and worldwide demand for metals have combined to make feasible deep ocean mining of the mineral-laden liquid spewed from these vents. (AP Photo/Woods Hole Oceanographic Institution, Pat Hickey) ** NO SALES **
