The size of a Blue Whale’s heart is enormous

The heart of a Blue Whale, which can weigh in excess of 590kg 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 3.2 km away.

Their arteries are so large that a full adult size human can swim through them. At birth, a baby blue whale is already 25 ft long and can drink up to 568 liters of milk a day and gain as much as 90 kg per day in its first year. They feed almost exclusively on krill, which are small, shrimp like invertebrates that are on average only 1 or 2 centimeters long.

They eat 4 to 6 tons of krill a day. As an adult, they can grow up to 133 meters long and weigh up to 180 tons. It’s so interesting that throughout history, Earth has been home to some of the biggest animals, but the biggest one of them all happens to exist in our timeline, swimming right now in the deep ocean.