About Thunder Bay National Marine Sanctuary

On October 20, 2000, the National Oceanic and Atmospheric Administration (NOAA) designated Thunder Bay National Marine Sanctuary as the nation

Our National Marine Sanctuaries, Protecting America's Underwater

Alpena film festival filled with Great Lakes and ocean flicks

Ironton Discovery in Thunder Bay National Marine Sanctuary

Visit Thunder Bay National Marine Sanctuary

Thunder Bay National Marine Sanctuary Foundation

Diving Shipwrecks in Michigan's Thunder Bay National Marine

Thunder Bay National Marine Sanctuary's clear waters means that

Thunder Bay National Marine Sanctuary

Thunder Bay Underwater Preserve