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LISTEN FOR WHALES
Killer
whale calls are no longer online. Please visit the Vancouver Aquarium
to learn more about acoustic research
Where do the live sounds originate?
British Columbia
is distinguished by its large population of killer whales. These
whales are often found in sheltered waters. More than 600 whales
inhabit our coastal waters, each identified by unique natural
markings. These whales form at least four communities: northern
resident, southern resident, transient and offshore. The ranges
of resident communities are shown on the map to the left.
The listening station is located in the Robson Bight (Michael
Bigg) Ecological Reserve in Johnstone Strait, British Columbia,
Canada.
Click
here to see a more detailed map of the Johnstone Strait area.
What kinds of sounds can you
hear?
Squeaks, Squawks and Whistles
Whales employ a wide variety of squeaks, squawks and whistles
while socializing.
Beach Rubbing
The
sounds you will hear on the live audio may include the sound
of the whales beach-rubbing at the Robson Bight (Michael Bigg)
Ecological Reserve. The whales frequently rub their bodies on
the small, smooth pebbles for an hour or more. Most evidence
points to beach rubbing being a social or "recreational" behaviour,
although it may also be a method for removing external parasites.
Foraging Sounds
Foraging describes any activity involving feeding or searching
for food. Scientists believe underwater vocalizations made while
foraging are used to keep group members in touch with one another.
Travelling Sounds
Travelling whales are usually highly vocal, but occasionally
groups travel in silence.
Other Sounds
When listening for whales, you will often encounter an array
of other sounds such as dolphin chirps and trills, grunts of
rockfish, and the snapping sounds of "pistol" shrimp. The background
noise you will most often hear when tuning into ORCA FM online
is the sound of boats and larger ships, and breaking waves on
windy days.
All pictures and audio © Vancouver Aquarium Marine Science Centre 1999
Listen for Whales |
Pre-Recorded Audio |
Acoustic Research |
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