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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)
It is hard to image the size of a Killer Whale as they can weigh from 6,000 to 10,000 pounds. They can also range in size from 20 to 30 feet long. The females are smaller in size than the males but still quite enormous. The males have a dorsal fin that is quite a bit larger than that of the females.