David Attenborough looks into the ocean's depths to discuss the coelacanth, a primeval fish hidden for 400 million years. Its mysterious movements reveal vital clues about life's journey from sea to land, as well as secrets of evolution and survival.

Cast:David Attenborough, Masamitsu Iwata, Kerry Sink,

Genre:Documentary,

country:United States of America, Japan, Germany,

Production:NHK Enterprises, ZDF/Arte, OceanX Media,