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EUGENENER NERon 22 December 2013
Transcript of Killer Whale
Killer Whale's largest predators is "human industrial waste water". discharged into the ocean marine pollution. There are boats propeller sound affects orcas sonar systems, and scare the fish away.
White killer whale
The heart beats at a rate of about 60 beats/min when the orca is at the surface, dropping to 30 beats/min when submerged.
The mean body temperature of the orca is 36.0 to 38°C.
The killer whale's teeth are very strong and covered in enamel. Its jaws are a powerful gripping apparatus, as the upper teeth fall into the gaps between the lower teeth when the mouth is closed. The front teeth are inclined slightly forward and outward, thus allowing the killer whale to withstand powerful jerking movements
Range & habitat
Killer whales are found in all oceans and most seas. Due to their enormous range, numbers, and density, distributional estimates are difficult to compare, but they clearly prefer higher latitudes and coastal areas over pelagic environments.
Sometime, killer whales swim into freshwater rivers. They have been documented up the Columbia River in the United States. They have also been found in the Fraser River in Canada.
Killer whales have good eyesight above and below the water, excellent hearing, and a good sense of touch. They have exceptionally sophisticated echolocation abilities, detecting the location and characteristics of prey and other objects in their environments by emitting clicks and listening for echoes.
Worldwide population estimates are uncertain, but recent consensus suggests an absolute minimum of 50,000. Local estimates include roughly 25,000 in the Antarctic, 8,500 in the tropical Pacific, 2,250–2,700 off the cooler northeast Pacific and 500–1,500 off Norway. Japan's Fisheries Agency estimated 2,321 killer whales were in the seas around Japan.
Type of Killer Whale
Type D, It is immediately recognizable by its extremely small white eye patch, shorter than usual dorsal fin, and bulbous head. Its geographic range appears to be in subantarctic waters about latitudes 40°S and 60°S. And although nothing is known about the type D diet.
Type A looks like a "typical" killer whale, a large, black and white form with a medium-sized white eye patch, living in open water and feeding mostly on minke whales.
Type B is smaller than type A. It has a large white eye patch. Most of the dark parts of its body are medium gray instead of black, although it has a dark gray patch called a "dorsal cape". The white areas are stained slightly yellow. It feeds mostly on seals.
Type C is the smallest type and lives in larger groups than the others. Its eye patch is distinctively slanted forwards, rather than parallel to the body axis. Like type B. Its only observed prey is the Antarctic cod.
Type of Killer Whale - 2
They also eat mammals and sharks. They have mostly been encountered off the west coast of Vancouver Island. Offshores typically congregate in groups of 20–75, with occasional sightings of larger groups of up to 200. Currently, little is known about their habits, Offshores appear to be smaller than the others.
The diets of these whales consist almost exclusively of marine mammals. Transients generally travel in small groups, usually of two to six animals, and have less persistent family bonds than residents. Transients vocalize in less variable and less complex dialects.
These are the most commonly in the coastal waters of the northeast Pacific. Residents' diets consist primarily of fish and sometimes squid, and they live in complex and cohesive family groups called pods. They visit the same areas consistently. These are the most intensively studied marine mammals.
Killer whale hunting a Weddell seal Other marine mammal prey species include nearly 20 species of seal, sea lion and fur seal. Walruses and sea otters are less frequently taken.
Biggest predator of orca is......
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Voice of orca