The Blue whale can grow up to 30 meters or 98ft. Anormal Blue whale weighs 170 tons. The Blue whale eatssmall krill. The Adult blue whale can eat up to 40 millionkrill a day. The whale lived in all the ocean until the 20thcentury when they were all most extended by whalers. Ina report in 2002 they said that they were only 5000 to12000 whales left.The largest dinosaur was the Argentinosaurus which wasestimated to be 90 just a little off from the blue whale. Thetongue on the blue whale is 2.7 metric tons. The heaviestwhale ever killed by the whalers was 190 tons. That is onebig whale.