National Ocean Service
Answers to your questions about our oceans and coasts.
What is ocean acidification?
What is a Plimsoll line?
Why do we have spring tides in the fall?
What is the difference between storm surge and storm tide?
What is the mariner's 1-2-3 rule?
What is the difference between a hurricane watch and a warning?
What is the difference between an AUV and a ROV?
What is 'Old Sow'?
Are mermaids real?
Where is Point Nemo?
What is a perigean spring tide?
What is sea foam?
How big is the Atlantic Ocean?
What is the Sargasso Sea?
What is the cryosphere?
Where do I get NOAA tides and currents data?
What is the Storm QuickLook?
How did the Pacific Ocean get its name?
How does pressure change with ocean depth?
How do we monitor tides?
Why is the ocean salty, but rivers flowing into it are not?
Why does the ocean get colder at depth?
What is an eddy?
What is the difference between a hurricane, a cyclone, and a typhoon?
Why is data on currents important?
What is a waterspout?
What is the significance of the NOAA logo?
What is the Loop Current?
What's the difference between storm surge and a tidal wave?
How is ocean observing data used?
What is the Bermuda Triangle?
Where is all of the Earth's water?
What is the smallest ocean?
How do we measure currents?
Did I find a lost underwater civilization?
Why do we study tides?
What is remote sensing?
What is ecosystem science?
How frequent are tides?
Who first charted the Gulf Stream?
What is the largest ocean basin on Earth?
What is IOOS?
What are El Nino and La Nina?
What does an oceanographer do?
What is a rip current?
Can the ocean freeze?
What is a tsunami?
What is a current?
How fast is the Gulf Stream?
What's the difference between an ocean and a sea?
What are the seven seas?
What is an iceberg?
What is a rogue wave?
Where is the highest tide?
What are tides?
Why do we have oceans?
How many oceans are there?
How does sound travel in the ocean?
Why is the ocean blue?
How much water is in the ocean?
Why is the ocean salty?
What's the difference between a tide and a current?
How far does light travel in the ocean?
How much of the ocean have we explored?
How deep is the ocean?
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