Multimedia Gallery

Green treefrogs call from their favorite habitat, rivers and lakes. They’re native to Louisiana and Florida, where these were recorded. Credit: Paul Moler, used with permission.

Can you hear the difference between the non-native Cuban treefrog and two common Louisiana native treefrogs? Cuban treefrogs’ call is distinctive. Biologist Paul Moler of the Florida Fish and Wildlife Conservation Commission recorded them in South Florida. Credit: Paul Moler, used with permission.

Bats produce a variety of vocalizations that are used for navigation, feeding, and social communication. Most vocalizations are pitched well above the range of human hearing and are referred to as ultrasonic. These calls are often known as echolocation calls since bats use the echoes produced when a sound bounces off a bug or a building to determine what is in the area. 
 

Bats produce a variety of vocalizations that are used for navigation, feeding, and social communication. Most vocalizations are pitched well above the range of human hearing and are referred to as ultrasonic. These calls are often known as echolocation calls since bats use the echoes produced when a sound bounces off a bug or a building to determine what is in the area. 
 

Bats produce a variety of vocalizations that are used for navigation, feeding, and social communication. Most vocalizations are pitched well above the range of human hearing and are referred to as ultrasonic. These calls are often known as echolocation calls since bats use the echoes produced when a sound bounces off a bug or a building to determine what is in the area. 
 

Bats produce a variety of vocalizations that are used for navigation, feeding, and social communication. Most vocalizations are pitched well above the range of human hearing and are referred to as ultrasonic. These calls are often known as echolocation calls since bats use the echoes produced when a sound bounces off a bug or a building to determine what is in the area. 
 

Bats produce a variety of vocalizations that are used for navigation, feeding, and social communication. Most vocalizations are pitched well above the range of human hearing and are referred to as ultrasonic. These calls are often known as echolocation calls since bats use the echoes produced when a sound bounces off a bug or a building to determine what is in the area. 
 

Amphibians’ permeable skin makes them incredibly sensitive to changes in their environment. Scientists and conservationists alike are using them as “sentinel species” that could provide early warnings of ecosystem change and stress affecting them and other organisms. Next time you are out, stop and listen. Do you hear them?
 

Amphibians’ permeable skin makes them incredibly sensitive to changes in their environment. Scientists and conservationists alike are using them as “sentinel species” that could provide early warnings of ecosystem change and stress affecting them and other organisms. Next time you are out, stop and listen. Do you hear them?
 

Amphibians’ permeable skin makes them incredibly sensitive to changes in their environment. Scientists and conservationists alike are using them as “sentinel species” that could provide early warnings of ecosystem change and stress affecting them and other organisms. Next time you are out, stop and listen. Do you hear them?
 

The sound of Hawaiian hoary bats hunting insects.

Birds and insects at a pond at St. Marks National Wildlife Refuge (Florida) April 2013 at 6:00am

When bats detect an insect from returned echolocation calls they rapidly increase the pulse rate and raise the frequency of calls in order to gather more information on the insect including location. These calls emitted right before a bat closes in on an insect are called terminal phase calls or "feeding buzzes". The frequency is well above human hearing capabilities at 65 khz and bats will...

An impressive chorus of frogs recorded at 9:00 pm on July 1, 2010 at Lake Ramsey Savannah State Wildlife Management Area near Covington, LA. Over the constant staccato "machine gun" call of the Pinewoods Treefrog (Hyla femoralis) you can hear the repetitive nasal "trill" of the Cope's Gray Treefrog (Hyla chrysoscelis) and the frequent sheep-like bleats of the Eastern Narrow-mouthed Toad (...

A sample of the audio file of Forster's tern colony calls that will be broadcast to attract breeding terns to islands in south San Francisco Bay.

Do you want to know what it sounds like to break ice in the Arctic Ocean? This audio file is of the U.S. Coast Guard Cutter Healy doing exactly that. This recording was taken outside on the ship's bow, so you can hear the ice breaking on the ship and the wind in the background. We can hear similar sounds in the messdeck, gym, and other places throughout the ship including my room,...

The multibeam sends out a soft ping (12 kilohertz) and the sub-bottom profiler emits a chirp sound (3.5 kilohertz). These sound signals are sent from the ship into the seafloor and the return signals that bounce back are used to determine ocean depth. Some of you, but not all of you, will be able to hear the ping immediately (about half a second) before the chirp. I can hear these sounds...

The sound of an Eastern American toad (Bufo americanus americanus) call.