Blue Planet II Season 1 Episode 4 - Big Blue

Airdate: 2017-Nov-19

Episode summary:

Survival in the remote open oceans is tough and baby turtles use debris as rafts to stay afloat while the Portuguese man-of-war sail along hunting for fish. There's also footage of the "boiling sea" effect created by lanternfish being trapped on the surface of the water by predators.

About Blue Planet II series:

Wildlife documentary series, presented and narrated by David Attenborough, exploring the planet's oceans.