Blue whale vocalizations are very low frequency sounds with some in the 15 Hz range. These tones characteristically travel long distances due to the high power, but also due to very long-wavelengths (over 300 feet for 15 Hz). This enables their songs to be heard thousands of miles from the source. We can assume that the projection distance is important (Nature can be extravagant, but she is never wasteful), but we can only speculate why they need to broadcast their songs across ocean basins. The

Blue Whales Are Getting Quieter — and Scientists Are Worried Recent studies have found that the calls of blue whales have dropped in volume by up to 40% over the past few decades. Blue whales are known for producing some of the loudest and deepest sounds in the animal kingdom—vocalizations that carry across hundreds of miles and are essential for navigation, communication, and mating. The sudden decline in their song volume has raised concern among marine biologists. Researchers believe the chan