Bioacoustics
Bioacoustics: the study of sounds made by living things
Sound: The pressure waves that move through compressible media (water, air, solid, etc.)
frequency of sound affects the pitch
amplitude determines whether a sound is loud or quiet
Two types of acoustics: vocal (by voice) and non-vocal (by movements)
Mammals use echolocation. What happens is mammals emit pulses of sound waves that travel through the water and bounce back, letting the mammal know how far an object is or what that object is.
Boats do a similar thing using SONAR, which stands for Sound Navigation and Ranging.
High-frequency acoustic recording package: allows scientists to collect data on different sounds, allowing them to discover what animals are in an environment, what time they are there, and if there are any invasive species; can sit on the ocean floor for up to a year
Southern Resident killer whales use echolocation to socialize, forage or hunt, find a mate, navigate, etc.
Sound travels 4x faster in water than in air
SRKW have different sounds based on their ecotype and pod
Noise pollution can temporarily or permanently lead to trouble hearing certain frequencies.