From 60ft beneath the sea, Dr. Sylvia Earle sends a wake up call about the plight of our ocean and why mankind needs it to survive. This is Aquarius' last scheduled mission after 20 years as a research base for studying coral reefs, sea life and the health of the ocean. This is a clip from a live event recorded on July 17th, 2012.

Why do we need the ocean? It supplies us with over half the oxygen on our planet. It holds 97% of the water on earth, not to mention untold species and discoveries. Simply put, our lives depend on it. Watch this clip from a live event recorded with Her Deepness Sylvia Earle, one of the most compelling ocean advocates in the world. It's a wake up call to all of us: the ocean is our lifeline.