It is estimated that the world's oceans hold over 20 million tons of gold. While most is diluted in seawater, the sea floor hides massive tectonic deposits that are the focus of a new, high-tech rush.
Black smokers on the ocean floor create "polymetallic sulfides" rich in gold, silver, and copper. Capturing these requires specialized ROVs (Remotely Operated Vehicles) working at 2,000+ meters.
The most active ocean mining is currently in Alaska. Shallow-water suction dredging allows for high gold recovery with relatively low-tech setups compared to deep-sea mining.
Explore Nome GuideOceanic gold is concentrated at divergent plate boundaries. Magma heating seawater creates hydrothermal circulation systems that leach metals from the oceanic crust. These metals are then precipitated as high-grade sulfides on the seafloor. AnalyzingDeep-Sea Bathymetry is the first step in identifying these future wealth centers.
Deep-sea mining is a major flashpoint between industry and environmentalists. The recovery of gold from the seabed can disrupt unique ecosystems. Paystreak supports the International Seabed Authority (ISA) in establishing sustainable recovery protocols.
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✓ Information last verified: January 2026