📸 : @taichi_maruyama · Blue whale mothers and calves communicate using low-frequency sounds that can travel hundreds of miles underwater. Mothers produce tonal calls to maintain contact, while calves respond with higher-pitched calls. These vocalizations help them stay together in the vast ocean and may play a role in learning migration routes. Researchers have recorded mother-calf pairs using quieter calls, possibly to avoid detection by predators. #whale #whalcalf #nature #oceanlife #sealife

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