Netflix has released the first trailer for Our Planet, a stunning nature documentary in the vein of the BBC's Planet Earth.
The streaming service promises the series will "showcase the planet's most precious species and fragile habitats, revealing amazing sights on Earth in ways they've never been seen using the latest in 4k camera technology".
It's said to have been filmed over four years, in 50 countries with more than 600 crew members.
Sir David Attenborough narrates Our Planet - joining the Netflix show after over six decades of presenting nature documentaries for the BBC.
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"Viewers [will be taken] on a spectacular journey of discovery showcasing the beauty and fragility of our natural world," said Sir David.
"Today we have become the greatest threat to the health of our home but there's still time for us to address the challenges we've created if we act now. We need the world to pay attention."
Our Planet is produced by Alastair Fothergill and Keith Scholey, who worked together with Sir David on Planet Earth and Blue Planet.
The Netflix series has been produced in collaboration with the World Wide Fund for Nature (WWF), which provided advice and the crew with gain to filming locations.
Our Planet is set to be released in April, 2019.