The document summarizes facts about the blue whale, including that it can grow up to 98 feet long and weigh 170 tons, eats small krill and up to 40 million per day, and was nearly driven to extinction by whalers but there are now an estimated 5,000 to 12,000 remaining. It also compares the blue whale's size to the largest dinosaur, and notes the heaviest whale killed by whalers was 190 tons.