is a landmark 2017 BBC nature documentary series narrated by Sir David Attenborough , serving as a sequel to the 2001 original Blue Planet . The seven-part series explores the world's oceans using cutting-edge technology to reveal brand-new animal behaviors and the growing impact of human activity on marine life. Key Highlights & Segments
: Broadclub cuttlefish that use flickering skin pigments to "hypnotize" and stun crabs. Blue Planet II
: Giant trevally leaping out of the water to catch low-flying terns in mid-air. is a landmark 2017 BBC nature documentary series
: Tuskfish that use coral "anvils" to smash open clam shells. Blue Planet II
The series is divided into seven main episodes, each focusing on a distinct marine habitat: