Cetacean Sound

Missing from cetacean

vocal chords

Making noise

use phonic (monkey lips) to push air/vibrations of air

Melon

fatty-filled area

Sonar/Echolocation

• produces sound, bounces off object, comes back

  • acts as sight, helps with catching fish

  • used by delphinidae and sperm whales

• frequency doesn’t change, but times sound is produced varies

High Frequency Whistles

vary in frequency, found in most odontocetes (no mysticetes)

• have signature whistles (kind of like names)

Low Frequency Tones

mysticetes, use SOFAR

Humpback

uses mid-frequency songs

SOFAR channel

sound fixing and ranging channel

• allows sound to go far (density/temp)

Killer Whales

acoustic clans

• avoid each other, don’t integrate