The heart of a blue whale, which can weigh in excess of 1,300 lbs (590 kg) and is the size of a small car. The gigantic heart beats 8 to 10 times per minute and each heartbeat can be heard from over 2 miles (3.2 km) away.
Queen Elizabeth II had 2 severely disabled "secret" cousins, Nerissa and Katherine, hidden from the public until 1987. The sisters were never visited by the Royal Family, and Nerissa was buried without a headstone. Katherine passed in 2014.