Vocalizations: Blue whales produce a variety of vocalizations, primarily low-frequency sounds known as "songs" or "calls" that can travel long distances underwater
Low-Frequency Range: Their vocalizations can range from 10 to 200 Hertz, with some calls reaching frequencies as low as 10 Hertz, which is lower than the human hearing range.
Communication: Blue whales use vocalizations to communicate with each other over long distances, potentially for mating purposes, maintaining social bonds, and possibly navigation.
Loudness: Blue whale calls can reach up to 188 decibels (dB) when measured at close range. This makes them one of the loudest animals, louder than a jet engine, though the sound dissipates quickly over distance.
Long-Distance Travel: The low-frequency nature of their calls allows blue whales to communicate effectively over vast oceanic expanses, aiding in finding mates and coordinating group movements.
Sound Production: Blue whales produce sounds using their larynx, which is adapted for producing low-frequency sounds. Air sacs within their bodies may also play a role in sound production.
Role in Echolocation: While primarily vocal communicators, blue whales also use echolocation to locate prey, particularly krill. This involves emitting sounds and interpreting the echoes that bounce back.
Conservation Concerns: Human-generated noise pollution, such as shipping traffic and underwater drilling, can interfere with blue whale communication and navigation, posing a threat to their survival.