Tedday2223
Member
The blue whale is the largest living creature—it's even larger than most dinosaurs. The biggest blue whales can be over 100 feet in length and weigh more than 100 tons. Their hearts alone can weigh 1,300 pounds and are the size of a small car. Unsurprisingly, blue whales have enormous arteries, which pump blood through their massive hearts and into their vital organs. In fact, these are the only animals you'll find with arteries so big that a fully grown human could swim through them, not that you should try it. 
But then again, I remembered Pinocchio's father, Geppetto, was swallowed by a whale, and the inside was so wide. 
