Protecting the Great Lakes and their rich maritime history through research, education and resource protection. The sanctuary works to ensure that future generations can enjoy these underwater treasures.
Start your visit here!
Great Lakes Maritime Heritage Center
OPEN ALL YEAR
The sanctuary has expanded!
Following a multi-year public process, the sanctuary has expanded from 448 square miles to 4,300 square miles. Read more here.
Learn more about the process of sanctuary expansion and access related documents here.
Click here to link to our calendar for upcoming events and programs!
Thunder Bay National Marine Sanctuary is featured in NOAA's FY14 Education Accomplishments Report, click here for a downloadable pdf of the report.
Revised August 20, 2015 by TBNMS Webmaster | Web site owner - National Ocean Service
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