Anahi 2014

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Orcas

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Anahi 2014

  1. 1. This presentation is about Orcas also known as Killer Whales. Scientists believe that whale ancestors looked a lot more like cows and dogs than fish. This marine mammal’s scientific name is Orcinus Orca. You will learn about what they eat, their habitat and range, look at a map of their range. Also you will study about their family life, life cycle, anatomy and some interesting facts.
  2. 2. Orcas have a diverse menu. They will eat seals, penguins, fish, tuna, rays, sharks, threshers, smooth hammer heads, squids, sea turtles, dolphins, salmon, porpoises, whales, walrus, sea birds, otters, and krill wriggle.
  3. 3.  Killer Whales are found all over the world- North America, Northern Norway, Japan, and Iceland, as well as water near Antarctica. Killer whales are found in waters near the poles to regions near the equator.  They first start at cold places, waters near the poles, then move on to the hot places, regions near the equator.
  4. 4.  A family group is called a pod. Orcas stay in pods to hunt, play, and explore together. The pod forms and reforms throughout orcas lives. Each pod has its own family traditions. Day-to-day killer whale behaviors generally consist of foraging, traveling, resting, and socializing. Sometimes a pod is a group of males that hunt together. Sometimes it’s a family of hunters made up of a lead female, her children, and her grand children.
  5. 5.  Calves develope inside their mother’s body for almost 16 months. When a killer whale gives birth to her single calf underwater the calf may emerge either head first or tail first. As soon as it is born the mother whale pushes it gently toward the surface of the water so it can take its first breath. Female killer whales are mature between age of 10 to15. Calves are born any time of the year. calf juvenile adult
  6. 6.  Baby 8 feet (2 meters) 400 pounds (180 kilograms) Adults 19-27 feet (6-8 meters) long and weigh 4 to 10 tons.
  7. 7.  They spend more than 1 hour underwater. Females will hunt without male orcas. Killer Whales need naps. They sleep by turning half of their brain off while the other half is awake. When hunting it doesn’t take long for the pod to find another seal because when they find one seal they quickly find another seal. The orca has a powerful agile body that helps makes it one of the most effective of all predators. The first food for the killer whale calf is milk, just as it is for the other mammals. Killer whales can mate any time of the year.

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