How Whales Will Save The World – If We Let ThemJason G. Goldman8/06/14 2:15pmFiled to: daily explainerwhalesclimate changeecologybiologymarine biologyoceanssciencezoologyanimals12EditPromoteDismissUndismissHideShare to KinjaToggle Conversation toolsGo to permalink 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. Advertisement Header image: Humpback whale via NOAA/Public domain.