how far can you hear a blue whaleʼs heartbeat

Blue whales are the largest animals on Earth, and their heartbeats are correspondingly massive. Scientists have estimated that a blue whale’s heartbeat can be loud enough to be heard for hundreds of miles (kilometers) underwater.

To be more precise, the low-frequency sounds generated by a blue whale’s heartbeat can travel great distances through water, potentially up to 200 miles (322 kilometers) or more, depending on conditions such as water depth and ambient noise. These sounds can even be detected by specialized underwater listening devices.

It’s worth noting that while humans might not be able to hear a blue whale’s heartbeat through air, underwater, the vibrations and low-frequency rumbles can be picked up by sonar equipment and other marine instruments.