Ocean Wonders EP03

1) What's at the bottom of the ocean -- and how we're getting there | Victor Vescovo 2) The wild sex lives of marine creatures | Luka Seamus Wright 3) The discoveries awaiting us in the ocean's twilight zone | Heidi M. Sosik 4) Could you survive the real Twilight Zone? | Philip Renaud and Kenneth Kostel 5) The deep sea's medicinal secrets | Sam Afoullouss 6) The dangers of a noisy ocean -- and how we can quiet it down | Nicola Jones