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A blue whale can weigh as much as 200 short tons (400,000 lbs). An adult blue whale can weigh up to around 180 metric tons (400,000lbs). A blue whale can weigh as much as 200 short tons (400,000 lbs).An adult blue whale can weigh up to around 180 metric tons (400,000lbs). A blue whale calve can weigh up to 2.7 metric tons (almost 6000lbs)
Scientists estimate that about two-thirds of the entire humpback whale population in the North Pacific visit the Islands each winter. At birth, whale calves can weigh up to 3,000 pounds and measure between 10 and 15 feet in length. An adult humpback can grow to more than 40 feet in length and weigh more than 40 tons.