For a thousand years humans systematically hunted whales for their meat, oil, and bone. Some whale populations were reduced by as much as 90%. But now that they’re being protected, scientists are realizing the critical role that whales play in balancing marine ecosystems. Here are four ways they keep oceans healthy.
Header image: Humpback whale via NOAA/Public domain.
https://gizmodo.com/is-saving-the-whales-key-to-mitigating-climate-change-1617032537
