Many people have run a half marathon. Nath Lasselin has completed the 21.1-kilometre achievement, but not on a road. She did it in a single dive under the surface of the St. Lawrence River, completing the distance in her scuba gear in six hours.
Scuba diver wants to teach others about environment
Kathy Dowsett
Kathy is the owner of Kirk Scuba Gear, a passionate Scuba Diver, Ocean Advocate and Managing Editor of The Scuba News Canada