Orcinus+Orca

ORCA ( Killer Whale )

Mammals are warm-blooded and maintain a constant high body temperature no matter what there surroundings are.
 * CLASS - MAMMALIA**

Cetacea is a order of large water mammals that have forelimbs changed into flippers, a flattened tail, and nostrils at the top of the head for breathing.
 * ORDER - CETACEA**

The orca or killer whale is the largest member of the dolphin family. Orcas have long, rounded bodies with large dorsal fins at the middle of their backs. Their black bodies are marked with white patches on the underneth and near the eyes. The male killer whale grows up to 23 feet long and weighs 7 to 10 tons. Female killer whale grows up to 21 feet long and weigh 4 to 6 tons.

Killer whales are found in the Arctic and Antarctic and are mostly seen off the west coast of the United States and Canada. killer whales are found in both coastal waters and open ocean. Like dolphins, killer whales sound waves to determine where there going. they do the same thing to hunt and use high clicks to stun prey. killer whlaes feed on fish, squid, seals and other marine mammals.



Killer whales pregnancy is 13 to 16 months. A calf is born in autumn weighing 400 pounds and up to 7 feet in length. A calf will remain with its mother for at least two years.

Studies have found that killer whales are one of the most contaminated marine mammals in the world. Pollution and chemical contamination make killer whales more likely to have reproductive problems.

1. What family dose the Orca ( Killer Whale ) belong to? 2. What season are Orca Calfs born in? 3. Give one reason Killer Whales are one of the most contaminated marine mammals?

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