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Humpback Whale - NOAA Fisheries
Humpback Whales: An Endangered Species Act Success Story?
Humpback Whale - Endangered Species Coalition
Humpback whale - Wikipedia
Listing of Humpback Whale Under the Endangered Species Act
Humpback whale - WWF
The Plan to Save the Humpback Whales—and How It Succeeded
Humpback Whale: Federally Endangered Listing Information, …
Successful conservation efforts pay off for humpback whales
Conservation of the Arabian Sea Humpback Whale