Quick humpback whale facts for you …👇 1. Humpback whales grow up to 60 feet (18.3 m) long and 80,000 pounds (36.3 metric tons). 2. Humpback whales can live for 80 to 90 years. 3. Humpback whales eat up to 3,000 pounds (1.4 metric tons) of food a d