Facts about Whale Heart
- 08
Whale hearts contain a unique network of sinuses and valves that allow blood to pool within the organ itself, reducing the workload on the circulatory system during the animal's extreme diving cycles.
- 07
Blue whale hearts produce a distinctive low-frequency sound during contractions that can be detected by marine biologists using underwater hydrophones from miles away.
- 06
In whales, the heart's myocardium contains specialized elastic fibers that allow the organ to stretch and recoil efficiently despite its massive size, enabling it to function without requiring a proportionally larger coronary blood supply than smaller mammals.
- 05
Approximately 60 times larger than a human heart, a blue whale's heart can weigh as much as 30 adult elephants combined at roughly 400 kilograms.
- 04
Blue whale heart tissue requires specialized blood vessels called Thebesian vessels to deliver oxygen directly to the thick cardiac muscle, since the organ is too large for diffusion alone to sustain it.
- 03
During deep dives exceeding 1,000 feet, a blue whale's heart rate slows to just 2 beats per minute, conserving oxygen for survival in extreme ocean depths.
- 02
A blue whale's heart pumps approximately 5,000 to 7,500 gallons of blood through its body with each beat, sustaining the largest animal ever to exist on Earth.
- 01
The blue whale heart weighs approximately 400 pounds and can be as large as a small car, making it the heaviest organ of any animal on Earth.