The heartbeat of a blue whale can be heard from over 2 miles away.

Blue Whale

With an average weight ranging between 130,000 and 150,000 kg, the hearts of blue whales are remarkable organs, tipping the scales at around 180 kg. This substantial size becomes a key factor in the extraordinary phenomenon whereby the heartbeat of a blue whale, despite its distance, resonates audibly from over 2 miles away. The sheer magnitude of their cardiovascular system contributes to the awe-inspiring ability to detect the rhythmic pulsations of these colossal creatures in the vast expanses of the ocean.