In the deep sea

Millions of years ago incredible forces ripped apart the Earth's crust creating seven extraordinary continents . Seven Worlds , One Planet , narrated by Sir David Attenborough , will reveal how each distinct continent has shaped the unique animal life found there . Welcome to BBC EARTH ! The world is an amazing place full of stories , beauty and natural wonder . Here you'll find 50 years worth of entertaining and thought - provoking natural history content . Dramatic , rare , and exclusive , nature doesn't get more exciting than this .