Experience Your National Marine Sanctuaries

Northeast/Great Lakes & Southeast Regions

Florida Keys

Flower Garden Banks

Gray's Reef

Mallow Bay-Potomac River


Stellwagen Bank

Thunder Bay

Pacific Islands & West Coast Regions

American Samoa

Channel Islands

Cordell Bank

Greater Farallones

Hawaiian Islands Humpback Whale

Monterey Bay

Olympic Coast

Explore rugged coastlines, towering kelp forests, and a storied seascape

Dive in


Virtual Dives

Immerse yourself in the ocean and your national marine sanctuaries without getting wet!

Dive Into Your Sanctuaries


Our planet is an ocean planet: Earth Is Blue. The National Marine Sanctuary System protects some of the most iconic underwater places throughout the United States, but we can't do it without you. No matter where you are, the ocean and Great Lakes are in your hands. We hope these images inspire you to help care for our ocean and to spread the word that Earth isn't green – it's blue.

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Bright pink anemones and a barnacle
A Hawaiian monk seal mother and pup lying on a beach
Humpback whale underwater


Stories from the Blue

Stories from the Blue celebrate the people at the center of national marine sanctuaries and marine national monuments. What does the National Marine Sanctuary System mean to you?

What does the National Marine Sanctuary System mean to you?

Earth is Blue Magazine

Explore Sanctuaries Live

with real-time video and communication feeds

Experience science beneath the waves