It comes as a surprise to many that there are a series of underwater caves measuring 10 km in length that exist below the Ottawa River not far from Canada’s Parliament. Renowned cave diver Jill Heinerth has been busy exploring these caves and documenting the extensive network of life that rely on the cover the caves provide. Jill is the Author of the book “INTO THE PLANET - My Life as a Cave Diver”, and Lawrence Gunther’s guest on The Blue Fish Radio show.