12/08/2026
🔴 Hidden Below: The Great Lakes is taking their viewers to another Hidden Below: LIVE expedition, this time to the Middle Island Sinkhole, a remarkable underwater ecosystem that offers a glimpse into conditions thought to resemble Earth billions of years ago. With their Boxfish Luna ROV they will explore this unique environment LIVE and with scientists to provide expert insight into what they're seeing and discovering. Tune in live or watch the recording afterwards.
What can Lake Huron tell us about early life on Earth?
Hidden beneath the waters of Lake Huron lies the Middle Island Sinkhole, an extraordinary underwater world where the past comes to life.
Formed over thousands of years as groundwater dissolved the limestone beneath the lakebed, this 80-foot-deep sinkhole is home to a rare ecosystem unlike anywhere else in the Great Lakes. Its vast carpets of colourful bacteria, splotched with shades of purple, brown, and white, offer scientists a glimpse into conditions that resemble Earth as it was 2.5 billion years ago.
Now, for the first time, you can explore this underwater time capsule LIVE as we team up with NOAA Thunder Bay National Marine Sanctuary and Great Lakes Now to bring viewers into the sinkhole using our high-resolution remotely operated vehicle (ROV).
Watch divers collect samples in real time and have your questions answered by Dr. Bopaiah Biddanda, an Aquatic Microbial Ecologist who has spent years studying this unique ecosystem, and Sarah Morrison from Thunder Bay National Marine Sanctuary, who will share how the sanctuary supports researchers uncovering the secrets of the sinkhole.
This September, discover a place few people have ever seen and uncover the story of life’s earliest chapters hidden beneath Lake Huron.
September 16, 11:00 A.M. ET
Tune in LIVE with Great Lakes Now
*The livestream date and time are weather dependent and may change. Follow along for updates.