NEXT EVENT: NUCLEAR FISH CITY
DATE: APRIL 22, 10:00 AM ET (EARTH DAY)
Take A Live Dive Into Fish City!
Join us on April 22 at 10:00 am ET for the first-ever live exploration of one of the Great Lakes’ most visually mesmerizing and least-seen underwater environments: the warm, crystal-clear waters surrounding the Bruce Power nuclear generating station on Lake Huron—one of the largest power plants on Earth.
Piloting advanced underwater robots will be Freshwater Explorers Zach Melnick and Yvonne Drebert. They will be joined by renowned fish biologist Dr. Nicholas Mandrak and Bruce Power scientist Dr. Cherie-Lee Fietsch, for this special livestream that offers extraordinary access to a thriving underwater “Fish City,” where more than a dozen species gather in a habitat shaped by human influence.
Expect close encounters with ancient bowfin—unchanged since the age of dinosaurs—alongside bigmouth buffalo, the Great Lakes’ largest sucker fish, known to live more than a century. Schools of curious smallmouth bass may be preparing to spawn, while giant walleye, freshwater drum, catfish, and rainbow trout move through the scene.
Dominating it all are vast numbers of gizzard shad—a vegetarian species that can appear in the millions, drawn to the plant’s warm outflow. And in this dynamic ecosystem, surprises are always possible: sea lamprey, salmon, diving birds, invasive carp, or even beaver may make an appearance.
For Zach and Yvonne, Fish City is one of their favourite places to explore—an unlikely freshwater world that feels more like a Mediterranean reef than a lake. Here, anything can happen.
Expect the unexpected on Hidden Below LIVE: Fish City. You may never see the Great Lakes the same way again!
About Hidden Below LIVE
Hidden Below: The Great Lakes is a wildlife documentary that will premiere in 2028, but you don’t have to wait. With Hidden Below: LIVE, you can join the team through exciting livestream dives to some of the lake’s most amazing places. Each livestream combines cinema-grade underwater robotics with real-time commentary from expert guests. Explore alongside Yvonne and Zach and have your questions about the mysteries of the deep answered in real time. Hidden Below LIVE is brought to you by Great Lakes Now/ PBS Detroit, and all of the amazing Hidden Below partners! 
Previous Hidden Below LIVE Events
Weren’t able to tune in live? See below for recordings of all the Hidden Below LIVE expeditions.
The Freshwater Everest. On September 14th, 2025, the Zach and Yvonne did a livestream from the “Freshwater Everest” aka “Superior Shoal”, a submerged mountain range that also happens to be one of the most remote freshwater sites on Earth. They explored volcanic rock formations, underwater canyons, rare redfin lake trout – including some spawning activity, deepwater sculpin, and a mysterious piece of wood!
Our Partners In Freshwater Life Support
