An official website of the United States government.
Here's how you know we're official.
A .gov website belongs to an official government organization in the United States.
A small lock or https:// means you’ve safely connected to a .gov website. Share sensitive information only on official, secure websites.
What do windward and leeward mean?
How many high tides are there per day?
Are tides higher when the moon is directly overhead?
Where is Earth’s Largest Waterfall?
Where do I get real-time and forecast coastal conditions?
How does sea ice affect global climate?
What is the Pineapple Express?
How are satellites used to observe the ocean?
Why do scientists measure sea surface temperature?
What is the difference between local sea level and global sea level?
What is an oil spill trajectory?
What is the Forchhammer's Principle?
How does NOAA help clean up oil and chemical spills?
How does NOAA monitor water levels around the nation?
Why does the ocean have waves?
What is an Operational Forecast System?
What is the International Date Line?
Why do we name tropical storms?
What is the difference between storm surge and storm tide?
What is the difference between a hurricane watch and a warning?
What is the difference between an AUV and a ROV?
What is the difference between a nautical mile and a knot?
How big is the Atlantic Ocean?
What is the difference between weather and climate?
How can you tell the difference between an oil slick and an algal bloom?
How did the Hawaiian Islands form?
How much of the ocean have we explored?
How does pressure change with ocean depth?
What is a navigation response team?
Why is the ocean salty, but rivers flowing into it are not?
Why does the ocean get colder at depth?
What is the difference between a hurricane, a cyclone, and a typhoon?
Is sea level the same all across the ocean?
How is ocean observing data used?
Where is all of the Earth's water?
Did I find a lost underwater civilization?
How is sea level rise related to climate change?
What does an oceanographer do?
How far does light travel in the ocean?
What role does the ocean play in the weather?
What is the longest mountain range on earth?
Social