A significant shift in perspective occurred in the 1950s and 60s with the discovery of whale intelligence, notably through Navy engineer Frank Watlington's recordings of whale songs. The release of the album 'Songs of the Humpback Whale' in 1970 further popularized this idea, framing whales not as mere resources but as intelligent, communicative beings worthy of protection.
Impact: High. This scientific and cultural revelation provided a powerful ethical and emotional basis for the 'Save the Whales' campaign, transforming public perception from one of exploitation to one of empathy and protection.
In the source video, this keypoint occurs from 00:09:26 to 00:13:20.
Sources in support: Chuck (Host), Josh (Host)

