Discover Thunder Bay National Marine Sanctuary

The 4,300 square mile Thunder Bay National Marine Sanctuary protects one of America's best-preserved and nationally-significant collections of shipwrecks.

Explore the Blue: 360° Shipwreck Alley
Thunder Bay Shipwreck: E. B. Allen
Thunder Bay Shipwreck: Norman
Thunder Bay Shipwreck: Haltiner's Barge
Thunder Bay Shipwreck: Monrovia
Thunder Bay Shipwreck: Monohansett
Thunder Bay Shipwreck: Oscar T. Flint
Trip In a Minute

Dive into the freshwater shipwreck sanctuary at Thunder Bay. The Thunder Bay Natural Marine Sanctuary is NOAA's only freshwater sanctuary, and is home to an estimated 200 wrecks. Swim, paddle, snorkel and dive to these amazing historic artifacts.

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Explore the Blue: 360° Shipwreck Alley
Thunder Bay Shipwreck: E. B. Allen
Thunder Bay Shipwreck: Norman
Thunder Bay Shipwreck: Haltiner's Barge
Thunder Bay Shipwreck: Monrovia
Thunder Bay Shipwreck: Monohansett
Thunder Bay Shipwreck: Oscar T. Flint
Trip In a Minute

Dive into the freshwater shipwreck sanctuary at Thunder Bay. The Thunder Bay Natural Marine Sanctuary is NOAA's only freshwater sanctuary, and is home to an estimated 200 wrecks. Swim, paddle, snorkel and dive to these amazing historic artifacts.

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