How Whales Change Climate [Remastered HD] | George Monbiot
Channel: Sustainable Human
Date: 2022-02-15

Think whales are just ocean giants? Dive deeper and discover their astonishing role in reshaping our climate. Unveiling a hidden ocean mystery where each whale is not just a majestic animal, but a key architect in the health of our planet. How do these leviathans hold a secret to keeping the climate in balance? Embark on a journey beneath the waves to unravel the untold story of the ocean's mightiest guardians.

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0:00 - What Is a Trophic Cascade?
0:20 - The Argument For Killing Whales
0:49 - How Whales Sustain Ocean Living Systems
2:26 - How Whales Change Climate

Transcript: 

One of the most exciting scientific findings of the past half century has been the discovery of widespread trophic cascades. A trophic cascade is an ecological process which starts at the top of the food chain and tumbles all the way down to the bottom.

We all know that whales eat fish and krill and some people have argued that killing whales is good for human beings as it boosts the food available for us to eat – and so you would think. But as the great whales declined so did the numbers of fish and krill.

It seems counterintuitive – surely their numbers would rise as their major predators disappeared – but it now turns out that whales not only eat these animals they also keep them alive. In fact, they help to sustain the entire living system of the ocean.

Keep reading: https://www.sustainablehuman.org/stories/how-whales-change-climate/

#Whales #WhalesChangeClimate #GeorgeMonbiot

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