What noise do gray whales make?

Gray whales make a variety of sounds, but they are most famous for their "moans". These are low-frequency sounds, often described as a mournful or melancholy sound.

They also make other noises, including:

* Clicks: Used for echolocation, similar to dolphins and bats.

* Whistles: Used for communication, possibly for mating or calling to calves.

* Pulses: Short, sharp sounds used for communication.

* Growls: Similar to the sound of a large dog, used during aggressive encounters.

The specific sounds they make can vary depending on their age, sex, and social context.

Here's a fun fact: Gray whale sounds are so low-frequency, they can be detected by hydrophones for miles!