National Ocean Service
Answers to your questions about our oceans and coasts.
What is bombogenesis?
What is a seiche?
Where is Point Nemo?
What is sea foam?
What is the cryosphere?
How does pressure change with ocean depth?
Why is the ocean salty, but rivers flowing into it are not?
Why does the ocean get colder at depth?
Where is all of the Earth's water?
What are El Nino and La Nina?
Can the ocean freeze?
What's the difference between an ocean and a sea?
What is an iceberg?
What is a rogue wave?
How does sound travel in the ocean?
Why is the ocean blue?
How much water is in the ocean?
Why is the ocean salty?
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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