This episode reveals what it takes to survive in the savage and forbidding world of the big blue, the world's greatest wilderness. We witness feats of incredible endurance, moments of high drama and extraordinary acts of heart-wrenching self-sacrifice.

Blue Planet II Season 1 Episodes...

• s01e01 - One Ocean
• s01e02 - The Deep
• s01e03 - Coral Reefs
• s01e04 - Big Blue
• s01e05 - Green Seas
• s01e06 - Coasts
• s01e07 - Our Blue Planet

Blue Planet II Show Summary

World-renowned naturalist Sir David Attenborough returns to present this landmark seven-part series about our planet's oceans. Blue Planet II explores the latest frontiers of scientific discovery, from icy-white polar seas to vibrant blues of the coral atolls, from the storm-tossed green Atlantic coastline to the black depths of the alien deep.