Sperm whales have rich cultural lives and sophisticated social bonds that make their welfare particularly significant.
Sperm whales are among the most cognitively sophisticated animals on Earth. The death of a sperm whale is not only the loss of an individual but can disrupt cultural transmission within family groups that persists for generations. Whales dying from plastic ingestion — stomachs packed with debris — experience prolonged starvation. Each welfare harm to a sperm whale occurs against a background of extraordinary intelligence and social complexity.