CNN Patagonia Life on the Edge of the World June 4, 2024 01:26:00
They were driven to the brink of extinction. ♪ >> by the end of the whaling era in the 1960s, less than 1,000 were left worldwide. researcher mariana coscaelena has been monitoring them for decades. [ speaking foreign language ] >> mariano is now dedicated to protecting these whales. [ speaking foreign language ] >> taking skin samples is a key way to monitor them.