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KILLER WHALE

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prabdeep brar

on 25 January 2016

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Transcript of KILLER WHALE

Excretion
Waste is excreted through the anal tract, and some food that has trouble making its way through the stomach may be removed by vomit. Liquid fecal matter floats to the top of the ocean. Killer whales drink sea water, and their kidneys cleanse the sea water by extracting the salt.
Whale poop is very good for the environment, researchers and marine biologists have found that a whales poop is extremely earth-friendly and necessary for a healthy environment. Phyto Plankton feed off of whale poop.
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Cetacea
Family: Delphinidae
Genus: Orcinus
Species: Orca

Symmetry
Killer whales have bilateral symmetry.

Digestion
Killer Whales don't chew their food, they swallow their food whole and they may tear it or shred it, with their teeth.
Food they consume gets broken down by enzymes in the stomach and then sorted and absorbed into body parts that need energy
The stomach of a Killer Whale is divided into three sections. The first section usually contains sand and broken shells. This is used to help the Killer Whale crush its food up, since it is swallowed whole. The stomach remains in constant motion with the use of the muscle tissues. The rest of the digestion process occurs in the other two sections of the stomach, after the first section has properly crushed the food.


Openings
Killer Whales have three openings. they are the mouth, anus and blowhole.

Mouth: The mouth is for swallowing their food.
Blowhole: Is a hole used to take in air above the ocean (breathe).
Anus: Tract through which waste is excreted
Cell Layers & Coelom
Killer Whales have three cell layers which come in the following order: endoderm, the ectoderm and the mesoderm.
Endoderm: Whales skin is smooth. Outer layer of the skin continuing renewing it self much like a snake skin. The renewed skin makes swimming more efficient because it creates smoother body surface.
Ectoderm:Killer whale's skin has a thick layer of blubber, which is composed of fat cells and fiber filled connective tissue. The blubber helps insulate the whale from heat loss. Basically the blubber keeps the heat and keeps the whales warm. It also restores fat for later usage.
Mesoderm: It is all the organs.
Coelom: Killer Whales have a true coelom.

KILLER WHALE
Classification
Prabdeep Brar日and Balreet Dhaliwal
Respiration
Respiration: A Killer whale holds it's breath under water.
-They breathe through their blowhole.
- They end up coming up to breath every 3 to 4 minutes比.热阿图和
-The muscular flap of a whale is used to cover the blowhole when it is underwater.
-When above water it inhales quickly, then closes the muscular flap.
-The water it blows out is just the water on top of the blowhole and is forced up with respiratory gasses.



Circulation

Closed system: Has lungs, and a heart that pumps blood through the body.
A killer whale's circulatory system helps maintain body temperature; it adjusts to conserve or dissipate body heat.
When a killer whale dives, circulation decreases at the skin, shunting blood to the insulated body core.
During prolonged exercise or in warm water a whale may need to dissipate body heat. In this case, circulation increases near the surface of the flippers, flukes, and dorsal fin. Excess heat is shed to the external environment.




Nervous System
They have an advanced central nervous and sensory system.

Hearing - Killer whales have a well-developed, sense for hearing underwater. A killer whale's brain and nervous system appear physiologically able to process sounds at much higher speeds than humans.

Eyesight- The eye of a killer whale lacks refraction at the corner interface by having a more strongly spherical lens. Spherical lens occurs due to the increased refraction of light rays when they strike a lens. Killer whale vision is well developed

Taste -- scientists do not know much of killer whales taste yet

Smell -- Olfactory lobes of the brain and olfactory nerves are absent in all toothed whales, indicating that they have no sense of smell. Being air-breathing mammals that spend a majority of time under water, a sense of smell would go largely unused in killer whales.

Reproduction
Researchers find it difficult to study killer whale reproduction.

Sexually: Internal reproduction requires union of male killer whales sperm with a female killer whales sperm
The fertilized egg develops in the female killer whales uterus for 17 months before being born
Polygamous: mate with several partners.
Males reach sexual maturity at around 13 years of age.
Females reach sexual maturity between 6 to 10 years of age. however the do not mate until they are 14 or 15 years old.




Different Classes
Resident: These are the most commonly seen of the three populations in the waters of the northeast Pacific. Residents' live in complex family groups called pods
Transient: Transients generally travel in small groups, usually of two to six animals, and have less persistent family bonds than residents. Transients travel widely along the coast; some individuals have been seen in southern Alaska and California
Offshore: they travel far from shore and feed primarily on schooling fish. They have mostly been seen off the west coast of Vancouver Island and near Haida Gwaii. Offshores typically are in in groups of 20–75, with larger groups sometimes up to 200.
Type A killer whale, a large, black and white form with a medium-sized white eye patch. .
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.
Type C is the smallest type and lives in larger groups than the others. Its eye patch is slanted forwards.
Type D is recognizaned by its extremely small white eye patch and smaller teeth.

Skeleton
Killer Whales have a long and thick skeletal structure
Skull, ribs, front fins, dorsal fin and backbone.

The End!
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