Cladogram showing phylogenic relations between mysticete species according to Hassanin and Ropiquet, et al. Balaenidae consists of two genera:
Free Essays Must Be Free! Waste no more time! Introduction Whale is a large mammal that lives its entire life in water. Like other mammals, whales have a large highly developed brain and nurse their young with milk. Whales resemble fish in many ways, but they are not.
Fishes are cold blooded and breathe underwater using gills. Whale maintains a warm, constant body temperature of about 37 degrees Celsius about 99 degrees Fahrenheit and breathes underwater using lungs. Unlike fish, whales move their tails up and down when they swim instead of moving side to side done by the fish.
Whales can be found in all oceans and seas in parts of the world, rivers and lakes in Southeast Asia, South Baleen whales essay tropics, Northern America and various other parts of the world.
Whales are enormous in size compared to other mammals but at the same time, it is also one of the biggest animals living today. There are over seventy- five different species of whales and each species has its own unique characteristics.
Now today, I would like to start the presentation off by talking about the different groups of whales and the different species within the groups.
Since there are so many different types of whales, I would like to talk about the whales that I believed to be very important. Whales are divided into two groups ;toothed whales and baleen whales. The toothed whales have jaws lined with simple pointed teeth.
These whales actively hunt fish and squid. Toothed whales vary in size from one s that are six feet long to the great sperm whales that average fifty-five feet in length and can weigh nearly fifty metric tons.
Among the more unusual toothed species are the narwhal and the beluga, which both inhabit the Arctic waters. From the toothed whales, I will be talking about the beluga whale. The second group known as baleen whales, instead of having teeth, they have mouths lined with giant flexible combs of a material called baleen, or whalebone which is used to filter small fish from the water.
There are three types of baleen whales: From this group I would like to talk about the southern right whale, northern right whale, bowhead whale, gray whale, blue whale and humpback whale. The reason why I chose these whales is because they are listed either as an endangered or vulnerable species.
Beluga Whale The beluga whale is a small, toothed whale that is white as an adult. Belugas have a small blunt head with small beak, tiny eyes, and a thick layer of blubber.Apr 02, · Words: Length: 2 Pages Document Type: Essay Paper #: Blue Whale If you have any questions about this paper, please contact our customer service department at THE BLUE WHALE What's Happening With the Blue Whale The Blue Whale is the largest mammal to live on earth.
Letter from a Character in Island of the Blue Dolphins - This is Won-a-pa-lei, or Karana.
As you may know I was left stranded on an island with my late brother Ramo, or Chief Tanyositlopai, while my sister Ulape and the rest of our tribe left to unknown land. The gray whale (Eschrichtius robustus), also known as the grey whale, gray back whale, Pacific gray whale, or California gray whale is a baleen whale that migrates between feeding and breeding grounds yearly.
It reaches a length of meters (49 ft), a weight of 36 tonnes (40 short tons), and lives between 55 and 70 years.
The common name of the whale comes from the gray patches and white. 20, Leagues Under the Sea Summary. Complete study guide for 20, Leagues Under the Sea.
Chapter Summaries, Analysis, Themes, Characters & More. The other Cetacean suborder, Mysticeti (baleen whales), comprises filter feeders that eat small organisms caught by straining seawater through a comblike structure found in the mouth called baleen. This suborder includes the blue whale, the humpback whale, the bowhead whale and the minke whale.
The whale research community has pricked up its ears. After the December conference, Hunt said she’s obtained baleen from humpback, fin, sei, blue, gray, minke and southern right whales.
And there’s plenty of old baleen around from the whaling era.