Diving Ottawa River Underwater Caves

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.

You can listen to Diving Ottawa River Underwater Caves online on Radio and Podcast. Open the player on this page to stream the available audio.

Diving Ottawa River Underwater Caves is an episode from The Blue Fish Radio Show by Blue Fish Radio.

This episode is 35:17 long.

This episode was published on Sep 26, 2025.

Yes. Use the heart button on the episode page to add it to your favorite episodes list.

Yes. This page shows related episodes from The Blue Fish Radio Show when more episodes are available from the podcast feed.