How can whales change the climate?

Please find a stunning video describing how the trophic cascading around the declining number of whales affects ocean systems. 



A similar video showing how wolves changed rivers can be found at: 
https://youtu.be/ysa5OBhXz-Q

We need to recognise the need for top predators in order to keep the ecological balances in place. Another way that people can contribute to waters healthy on the land and sea.



www.ausmepa.org.au