The blue whale is the largest animal known to have ever existed. They can reach a maximum confirmed length of 98 feet and weigh up to 190 tons. 🎥 🐋 by @dolphindronedom/IG | Science Channel

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