Other interesting statistics about blue whales:
- Adults weigh on average between 200,000 and 300,000 pounds.
- During the feeding season, blue whales must eat two to four tons of krill per day.
- At birth, a blue whale is about 23 feet long and weighs 5,700 to 6,000 pounds.
- A nursing mother produces over 50 gallons of milk per day.
- Nursing calves gain 9 pounds of weight per hour or over 200 pounds per day.
Source:
http://www.tmmc.org/blue.htm