Re-live some highlights of the series
Sir David Attenborough gives his closing message for the Blue Planet II series.
Len Peters has fought cultural tradition in order to protect the world's largest turtle.
Dr Lucy Quinn from the British Antarctic Survey looks at plastic ingested by albatross.
King penguins need to get past a natural barrier of elephant seals to reach their colony.
The courtship of these Pacific leaping blennies is interrupted by waves.
Octopuses and moray eels crawl across dry rock to set their ambush.
Baby sea dragons emerge from their father's egg pouch and start to feast on mysis shrimp.
Spider crabs congregate in massive numbers to find some space to grow.
This cunning octopus creates a protective suit of shells to hide in plain sight.
A mother pilot whale is reluctant to let go of her dead calf.
Nutrients from the deep provide sustenance for a large gathering of sea life.
The Portuguese man o’war reduces a fish to a scaly husk.
Lantern fish provide a rare banquet for some of the ocean’s top predators.
At night, danger lurks in the coral reef.
These clownfish relocate a coconut shell to provide a stable surface for their nursery.
This master of disguise has an unorthodox approach for hunting crabs.
Two shrimps use this deep sea sponge for shelter, for the rest of their lives.
A sperm whale carcass draws the attention of several six gill sharks.
A cutthroat eel ventures too close to a deep-sea brine lake.
The tusk fish opens clams in its 'special kitchen'.
In the fjords of northern Norway massive gatherings of orca hunt herring.
Giant trevallies launch themselves out of the water to catch fledgling terns.