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The nation's ocean and coastal agency: Supporting coastal communities, promoting a robust economy, and protecting coastal and marine ecosystems
school of spadefish acquaculture farm newly discovered coral ROV exploring seafloor
magma explosions under the sea
OCEAN FACT
Underwater Volcanoes

The greatest number of the Earth's volcanoes occur on the ocean floor along spreading ridges. Sixty percent of all active volcanoes occur at the boundaries between tectonic plates.

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About NOS

The National Ocean Service (NOS) translates science, tools and services into action, to address threats to coastal areas such as climate change, population growth, port congestion, and contaminants in the environment, all working towards healthy coasts and healthy economies.

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Miami coastline

Coasts

Supporting healthy, resilient coastal communities.

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Midway Atoll

Oceans

Protecting the health, productivity, and diversity of our ocean.

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NOAA Coast Survey vessel

Navigation

Navigation, tides, currents, and geodesy.

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