The nation's ocean and coastal agency: Supporting coastal communities, promoting a robust economy, and protecting coastal and marine ecosystems
crown-of-thorns starfish, image by Greg McFall, NOAA Dive Program people recreating on a boat a monk seal
a hurricane
Watch vs. Warning

What is the difference between a hurricane watch and a warning? A warning means that hurricane conditions are expected; a watch means that conditions are possible.

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Mapping an Ocean Ecosystem

Creating a habitat ecosystem map of the seafloor is a tricky process, but it's a key tool that scientists use to better understand our ocean. Learn more in this two-minute video.

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Tides Tutorial

Attention students of all ages! Check out our newly-revised tides tutorial to better understandthe complex systems that govern the movement of tides and water levels.

Tutorial NOS Education

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What do you think of our website? We'd like to know. Take a few minutes to complete our quick survey. Your opinion will help us improve—you won't even need a pen!

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About NOS

We translate 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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coral reefs

Climate, Reefs, & Resilience

Video: See why climate change is the biggest global threat coral reefs face today, and how fostering more resilient reefs can address the impacts of climate change.

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Photo courtesy of U.S. EPA

Green is the New Gray

Green infrastructure is not only beautiful, it provides many valuable services. See how 'green is the new gray' with NOAA's Digital Coast.

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