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Earth Is Blue

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 the images of Earth Is Blue inspire you to help care for our ocean and to spread the word that Earth isn't green – it's blue.

Aerial of Manitowoc shoreline with Manitowoc North Breakwater Lighthouse in the foreground
The wreck of Henry Gust resting on the bottom as a diver swims over
The Rouse Simmons wreck is surveyed by divers. Credit: Tamara Thomsen/Wisconsin Historical Society
Map of the Wisconsin-Lake Michigan shoreline showing the sanctuary boundaries


Map of Wisconsin's mid Lake Michigan shoreline showing the sanctuary boundaries, which encompasses 962 square miles and includes 36 known shipwreck sites.

A diver swims over the two masted schooner, Walter B. Allen
A diver swims over the two masted schooner Walter B. Allen, sunk in 1880.Credit: Tamara Thomsen, Wisconsin Historical Society

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