Nearly three-fourths of the earth's surface is covered by oceans. French filmmakers Jacques Perrin and Jacques Cluzaud set off to make a documentary about this vast watery expanse and the vital role it plays in human history and survival. Narrated by Neri Marcorè, it is the tale of a fascinating journey to the deepest depths and through raging storms in the vast territory of those who inhabit the sea, told not only to describe the extraordinary range of marine biodiversity but also to protect a threatened world inhabited by many endangered species.<%YOUTUBE=DGLKJ9KJr9k%>
