The whale ear is a tiny opening that closes underwater. Let's Dissect the Song Humpback whales produce moans, grunts, blasts and shrieks. Each part of their song is made up of sound waves. Some of these sound waves are high frequency. If you could see these sounds, they would look like tall, pointed mountains.
Whales also emit low frequency sound waves.
These waves are like hills that are wide spread apart. These sound waves can travel very far in water without losing energy. Sound frequencies are measured in units called Hertz. Humans can only hear part of the whales' songs. We aren't able to hear the lowest of the whale frequencies.