
You
probably know that the blue whale is the biggest marine mammal in
existence. But would you ever have thought you could crawl through its
heart? Well at the very least you can crawl through its major arteries.
Blue whales are so large that an adult blue whale’s heart can be almost
2,000 pounds.
It only beats once every ten seconds and the beat is so loud that it
can be heard two miles away. If you’re agile enough, you could crawl
right through its arteries because of how big they are. The heart is
actually so big, it’s the size of a mini cooper.
Some other facts about just how big blue whales are: Their lungs are
pretty big too. Each lung is the size of an average closet. Also, their
tongues are so heavy that they outweigh elephants! As far as overall
size goes, you've probably heard they can be as large as two city buses.
Let’s just be thankful they don’t eat people.
(Source)