Sounds Recorded in Glacier Bay

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The Voices of Glacier Bay Project
Check out our amazing Glacier Bay Soundscapes!
Listen to crashing glaciers, bellowing sea lions, whispering rain, forest songbirds, and singing seabirds...enjoy the amazing natural sounds of Glacier Bay!

Notes on Sound Clips
The recordings below were made by the National Park Service, using a hydrophone that is anchored near the mouth of Glacier Bay, Alaska for the purpose of monitoring ambient noise. The recordings are intended to provide examples of the types of natural and manmade sounds that occur in Glacier Bay National Park.

Impulsive Knocks Recorded in Glacier Bay

Recorded in 2024, these sounds are suspected to be from a humpback whale. Click here to listen to several recordings of these fascinating underwater sounds.

Whale Sounds

Humpback Whale
(Megaptera novaeangliae)

Humpback whale song is thought to be a male breeding display that is prominent in their wintering grounds, and previously thought to be quite rare in the feeding areas. It is called a song because it is a long, complex vocalization that repeats in a predictable pattern. Whale song recordings from Glacier Bay have been made only in the fall, when perhaps the hormonal changes that spur whales to migrate are beginning to occur.

Feeding call is a sterotyped vocalization typically used during humpback whale coordinated group feeding. In the Glacier Bay area, it typically occurs 15-20 seconds before a group of whales all surface together after a foraging dive. This specialized call is common in some localities but rare in others. It may be used for group coordination, (ready, set, go!) or to scare/concentrate the schooling fish that are their prey.

Unstructured sounds. The most common humpback whale vocalization in Bartlett Cove was the simple “whup”, made with no discernable pattern. The track entitled “moo etc”is a sample of common humpback whale vocalizations on a somewhat windy day. Whales can also make non-vocal sounds by slapping their tail, flippers or other body parts on the water (for example during a breach). These sounds can carry for hundreds of meters and seem to provide another way for whales to communicate with one another over distance. As you will hear twice near the end of the cut titled “wheezeblow etc”, even the whale’s breathing can be audible at some distance, especially wheeze blows.

The humpback whale song recorded with the boat in the foreground illustrates that whale sounds and manmade sounds co-exist in the marine environment, with unknown effects on whales and other marine life. In one of the recordings, the sound of repeated tail slaps overlaps with the loud, high-pitched whining of a propeller in bad repair, perhaps indicating that the sound disturbed the whale.

_{Use the audio players below this section to listen online, or download mp3 files directly with these links (right click- 'save link as'):}
2020 possible humpback whale mom / calf vocals with harbor seal
2020 humpbacks and harbor seals in quiet
2020 humpback whale slaps and vocals with harbor seal
Contact Call (moo)
Contact Call (whup)
Flipper Slap
Vocals and wheeze-blow
Tail Slaps with Propeller Whine
Whale Song with Outboard Engine Noise

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2020 humpback whale slaps and vocals with harbor seal
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humpback whale slaps and vocals with harbor seal from June 2020
Audio Transcript

Humpback whale slaps and vocalizations with harbor seal roaring in quiet conditions in June 2020.

humpback whale feeding call
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humpback whale feeding call recorded in July 2000
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Humpback whale trumpet-like feeding call that the whales seem to use when feeding on herring

Humpback whale vocals and loud snaps
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Humpback whale vocals and loud snaps
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Humpback whale vocals and loud snaps recorded in June 2010

Humpback whale bubble-feeding and vocalizing
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Humpback whale bubble-feeding and vocalizing
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Humpback whale blowing bubbles to aid in feeding on small fish of some kind, followed by vocalizations

Outboard Engine Whine and Humpback Whale Song
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A boat with outboard engine passes while humpback whale song is heard.
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A whining boat engine is heard while humpback whale songs are simultaneously heard.

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Killer Whale
(Orcinus orca)

Vocalizations of the three killer whale ecotypes, the fish-eating (resident) killer whale, the mammal-eating (transient) killer whale, and the offshore killer whale (genetically similar to resident type, but ecologically not well understood) are difficult to distinguish by the untrained ear. However, for the researcher studying killer whale vocalizations they are almost as distinct as photographic images of the whales. The vocalizations not only tell the researcher whether the calling killer whale is a resident, a transient or an offshore, but also reveal to which resident or transient population or sub-population the caller belongs. If the caller is a resident, it furthermore shows who his closest relatives are.

Both residents and transients use discrete calls, whistles, and clicks. Calls and whistles are used only in social communication, while clicks are predominantly used in echolocation. A clicking killer whale produces high frequency sounds and uses the echoes of those sounds to form images of the areas around him or her. In much the same way that humans use sonar to investigate the seafloor, the ultra-structure of certain materials, or medical views of the inside of our bodies, whales use echolocation to orient and find food in an environment where lighting conditions are poor. Based on differences in usage of calls, whistles, and clicks, researchers can tell whether the whales are foraging, resting, or socializing.

Resident Killer Whale Vocalizations
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Listen to killer whale vocalizations from the resident killer whale ecotype.

Credit / Author:

NPS / C. Gabriele
Audio Transcript

Sounds of killer whale vocalizations recorded underwater with a hydrophone.

Offshore Killer Whale Vocalizations
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Hear the sounds of the offshore killer whale ecotype.

Credit / Author:

NPS / C. Gabriele
Audio Transcript

Vocalizations of offshore killer whales recorded by underwater hydrophone.

Transient Killer Whale Vocalizations
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Listen to the unique vocalizations of the transient killer whale ecotype.

Credit / Author:

NPS / C. Gabriele
Audio Transcript

Vocalizations of transient killer whales.

Killer Whale Echolocation Clicks
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Killer whales use echolocation to locate prey and other animals in the water. Hear the sound this echolocation creates in this hydrophone recording.

Credit / Author:

NPS / C. Gabriele
Audio Transcript

Echolocation clicks from a killer whale, recorded by underwater hydrophone.

Harbor Seals
(Phoca vitulina)

Male harbor seals make "roaring" vocalizations during their mating season to guard territories. It sounds very much like rocks rolling on the ocean floor.

2020 Glacier Bay harbor seal roar (linked below)
Harbor seal roar with vessel noise

For more information on the functions of harbor seal vocalizations, visit the following site:
https://dosits.org/galleries/audio-gallery/marine-mammals/pinnipeds/harbor-seal/

Harbor Seal Vocalization - August 7, 2020
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A harbor seal vocalizes several times in this short recording.
Audio Transcript

A harbor seal vocalizes twice.

Other Animal Sounds

Sometimes we hear sounds on the hydrophone that we can not readily identify. This record probably contains the sounds of birds swimming or landing on or near the surface of the water, and remind us that some sounds are not made intentionally. One of our sound samples contains bird calls made at the surface that were audible on the hydrophone.

Seabirds Calling at Sea Surface
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Unknown seabirds calling out on the surface above the hydrophone.

Credit / Author:

NPS / C. Gabriele
Audio Transcript

Sound recording of bird chirps/calls as recorded by an underwater hydrophone.

Seabirds Diving at Sea Surface
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Seabirds are heard diving and swimming underwater, occasionally knocking against recording equipment.

Credit / Author:

NPS / C. Gabriele
Audio Transcript

Seabirds are heard diving and swimming underwater, knocking against recording equipment twice near the start of the recording.

Unknown Animal Knock on Hydrophone - "Knockfish"
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An unknown animal is recorded making a knocking sound on or near the hydrophone. What's your guess as to this "Knockfish's" origin?

Credit / Author:

NPS / C. Gabriele
Audio Transcript

Knocking sounds recorded on underwater hydrophone.

Vessel Sounds

The recordings of vessels were made at various distances from the hydrophone, and under a variety of sea conditions, but demonstrate that different types of vessels can be distinguished from one another.

Cruise Ship Underwater Recording
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A cruise ship traveling at approximately 10 knots passes the hydrophone.
Audio Transcript

A constant hum of a cruise ship engine is recorded.

State Ferry Hydrophone Recording
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Listen to the sound of a ferry transporting passengers and their vehicles between remote Alaska communities.

Credit / Author:

NPS / C. Gabriele
Audio Transcript

Consistent hum of a large boat captured on underwater hydrophone.

Freighter Hydrophone Recording
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Listen to the sound of a freighter approaching the Bartlett Cove dock.

Credit / Author:

NPS / C. Gabriele
Audio Transcript

Whirring noise of a freighter as recorded by underwater hydrophone.

Small Diesel Engine Hydrophone Recording
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Underwater recording of a passing boat powered by a small diesel engine.

Credit / Author:

NPS / C. Gabriele
Audio Transcript

Small diesel engine as recorded by underwater hydrophone.

Outboard Engine Whine and Acceleration
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A boat with outboard engine comes to a rapid stop, and an engine whine is heard. It accelerates and leaves at the end of the recording. October 2000
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Outboard engine decelerates, loud engine whine, and then quiet. Eventually it accelerates away.

Outboard Engine (60hp) at 10 Knots
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Boat powered by a 60hp outboard engine passes the hydrophone at approximately 10 knots.
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Boat with 60hp outboard engine passes the underwater hydrophone at approximately 10 knots.

Outboard Engine (60hp) at 20 Knots
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Boat powered by a 60hp outboard engine passes the underwater hydrophone at approximately 20 knots.

Credit / Author:

NPS / C. Gabriele
Audio Transcript

60hp outboard engine passes the underwater hydrophone at approximately 20 knots.

Propeller Whine Hydrophone Recording
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A boat passes the underwater hydrophone with a whining propeller.

Credit / Author:

NPS / C. Gabriele
Audio Transcript

Whining propeller noise recorded by underwater hydrophone.

Ambient Noise

Wind and rain are the dominant sources of inanimate natural underwater sound. As you will know after you’ve heard these cuts, you can easily tell quite a bit about the weather just by listening. Whales and other creatures that depend on underwater sound often have to compensate for background noise from wind, rain, earthquakes, glaciers and vessels when they communicate with one another.

Heavy Rain on Sea Surface
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Underwater recording of heavy rain falling on the sea surface.

Credit / Author:

NPS / C. Gabriele
Audio Transcript

Recording of heavy rain by an underwater hydrophone.

Light Rain on Sea Surface
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Rain is captured on the hydrophone.
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A steady hiss of rain is heard hitting the sea surface above the hydrophone recording device.

Snowfall on Sea Surface
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The sound of snow falling onto the sea surface, as recorded by an underwater hydrophone.

Credit / Author:

NPS / C. Gabriele
Audio Transcript

Underwater recording of snow falling on sea surface.

Light Wind at the Sea Surface - Underwater Recording
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The sound of light wind as recorded by an underwater hydrophone.

Credit / Author:

NPS / C. Gabriele
Audio Transcript

Hydrophone recording of light wind at the sea surface.

Moderate Wind on the Sea Surface - Underwater Recording
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Sound of moderate wind picked up by an underwater hydrophone.

Credit / Author:

NPS / C. Gabriele
Audio Transcript

Hydrophone recording of moderate wind at the sea surface.

Wind and Ship Noise on Underwater Hydrophone
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Sounds of wind and a passing ship picked up by the hydrophone.
Audio Transcript

Hydrophone recording of wind on the sea surface and a passing ship.

Last updated: October 29, 2024

Contact Info

Mailing Address:

Glacier Bay National Park & Preserve
PO Box 140
Gustavus, AK 99826

Phone:

907 697-2230

Contact Us

Sounds Recorded in Glacier Bay

Impulsive Knocks Recorded in Glacier Bay

Whale Sounds

Humpback Whale (Megaptera novaeangliae)

2020 humpback whale slaps and vocals with harbor seal

humpback whale feeding call

Humpback whale vocals and loud snaps

Humpback whale bubble-feeding and vocalizing

Outboard Engine Whine and Humpback Whale Song

Killer Whale (Orcinus orca)

Resident Killer Whale Vocalizations

Offshore Killer Whale Vocalizations

Transient Killer Whale Vocalizations

Killer Whale Echolocation Clicks

Harbor Seals (Phoca vitulina)

Harbor Seal Vocalization - August 7, 2020

Other Animal Sounds

Seabirds Calling at Sea Surface

Seabirds Diving at Sea Surface

Unknown Animal Knock on Hydrophone - "Knockfish"

Vessel Sounds

Cruise Ship Underwater Recording

State Ferry Hydrophone Recording

Freighter Hydrophone Recording

Small Diesel Engine Hydrophone Recording

Outboard Engine Whine and Acceleration

Outboard Engine (60hp) at 10 Knots

Outboard Engine (60hp) at 20 Knots

Propeller Whine Hydrophone Recording

Ambient Noise

Heavy Rain on Sea Surface

Light Rain on Sea Surface

Snowfall on Sea Surface

Light Wind at the Sea Surface - Underwater Recording

Moderate Wind on the Sea Surface - Underwater Recording

Wind and Ship Noise on Underwater Hydrophone

Park footer

Contact Info

Mailing Address:

Phone:

Contact Us

Tools

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Humpback Whale
(Megaptera novaeangliae)

Killer Whale
(Orcinus orca)

Harbor Seals
(Phoca vitulina)