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Transcript of Killer Whale
Female whales are: 4.9 - 5.8 meters; weighing around 3,000 - 8,000 pounds. Newborn whales are: 2.1 - 2.5 meters long and weigh about 395 pounds. Killer Whales unique coloration, social behavior, physical appearance, preferred food, and vocal dialects sets apart from most other whales. Behavior! Some of the main food for Killer Whales are fish, squids, seals, sea lions, walruses, birds, sea turtles, otters, penguins, polar bears, and reptiles. Killer whales are polygamous: they mate with several partners. Their underwater communication sounds are squeals, squawks and screams; the acute hearing and vision is used in and out of water. Echolocation: enables them to locate objects by projecting high-frequency sound waves by listening to echoes; they echo-locate by producing clicking sounds and receiving and translating echos. Ecology! The possibilities of oil spills are a major threat to Killer Whales. Fisherman, long ago, were caught shooting Killer Whales on account of the whales "stealing" at least 50% of fish from the commercial longlines of Alaska, New Zealand, and Brazil. Other Stuff to know about Killer Whales! Killer Whales appeared around 11 million years ago. Activites of Killer Whales are: foraging, traveling, resting, and socializing. The life span for males is around 50-60 years old; for females it is around 60-80 years old. There have been reported at least 2 dozen shark-human attacks since 1970's with killer whales held in captive as oppose to whales in the wild. They believe the stress of the captivity causes more intense aggression towards humans. They can speed up to 30 miles per hour and eat about 50-150 kg meat a day.