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Transcript of Orca Whales
Three "subspecies" of Orcas
Basic Facts Continued
Age, Size, and Weight
- 20-26 feet long and weigh 8,000 to 12,000 lbs
- 16-23 feet long and weigh 3,000 to 6,000 lbs
- 7-8 feet and 400 lbs at birth
Northwest Native Art
Orcas in Captivity
-Fear of Orcas gave them their nickname "Killer Whale"
- Big fishing competitor
-Orcas were often hunted for meat and oil supply
- Natives viewed Orcas with high respect
- Massive amounts of orcas were caught for captivity
-Whale watching has become major tourist acitivity
Sexual Maturity and Breeding
Ford, J. K. B., Ellis, G. M., & Balcomb, K. C. (2000). Killer whales: The natural history
and genealogy of Orinus orca in British Columbia and Washington. Vancouver: UBC Press.
Kriete, B., & Puget Sound Nearshore Partnership. (2007). Orcas in Puget Sound.
Olympia, Wash: Puget Sound Nearshore Partnership.
Pryor, K., & Norris, K. S. (1991). Dolphin societies: Discoveries and puzzles. Berkeley:
University of California Press.
Yates, S. (1992). Orcas, eagles & kings: Georgia Strait & Puget Sound. Boca Raton, Fla:
- Active, social and intellectual
- Breach, flip, side rolling
- Like to play with their food
-Females- Sexual mature at age 15
- Gestation period- 13 to 15 months
- Average females has 3-5 calves
in their lifetime
-Males- sexually mature at age 25
-Use their dorsal fin for mating
- Feed on fish
- Travel in pods of 10-75
- Travel in smaller groups
- Feed on marine mammals
- Less stable family bonds
- Rarely seen
- Feed on fish and mammals
- Can be found in all oceans
- Pacific Northwest Orcas are most closely watched
- Population is healthy and stable
- Estimation between 30,000 to 80,000
- Each pod has unique calls in terms of pitch and pattern
- Dialects are passed down generations
- Rapid clicks are used for echolocation and sonar signals for navigation
- Socializing sounds are squeals, whistles and squawks
- Each population speaks extremely different dialects that are easily distinguishable