› added 4 years ago
97
TIL the arteries of the blue whale—the largest living creature on earth—are so big that a full-sized human being could swim through them. Blue whales can grow to over 100 ft long, and weigh over 100 tons. Their hearts can weigh up to 1,300 lb—with aortas over 9 inches in diameter & HR of 8-10 bpm.