Cetacea

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    Cetacea

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    The mammalian order Cetacea is composed of two parvorders, the Odontoceti (toothed whales) and the Mysticeti (baleen whales). They compromise of over 80 known living species of whales, dolphins and porpoises (Reiss & Marino, 2001; Simmonds, 2006). The compelling sets of characteristics they have acquired over their 55-60-million-year evolution including echolocation ability and complex social organisation (Hof, Chanis, & Marino, 2005) have created great belief that this order contains some of the most intelligent animals (Simmonds, 2006), with the suggestion that they are second to humans in terms of general intelligence (Reiss & Marino, 2001). Modern cetacean brains are among the largest of all mammals in terms of both general size and in relation to body size, with the largest brain in the animal kingdom being possessed by the sperm whale (Physeter macrocephalus) (Marino, 2004) with a mass of 60% larger than that of an elephant (Marino et al., 2007). It is unsurprising that encephilization (a measure of the size of the brain relative to the body) is commonly linked to cognitive abilities, with some cetaceans having the second highest encephilization quotient after humans (Manager, 2013). A hypothesis put forward by Jerison (1973) that the encephilization quotient is a biological indicator of intelligence, with high encephilization quotients…

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    Stenella longirostris produce milk and from their mammary glands so they fits into the Mammalia class. Female mammals have to devote a lot of time into their offspring because of this feeding skill, so therefore these animals seem very family preferentially. Dolphin’s order is Cetacea. Spinner dolphins are believed to be descendants of archaeocetes so they are categorized in the Cetacea order. They takes no part in life on land at any point in development and live a completely aquatic…

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    is known for writing “Not one of them would sit down, or eat a bit of any thing.... On expressing my surprise at this, they were all taboo, as they said; which word has a very comprehensive meaning; but, in general, signifies that a thing is forbidden” Cook & King 1821, p. 348. Taboos expand across a wide range of do’s and don’ts from social behavior to food and drink standards. In today’s society taboos about food are the most prolific. It is society unacceptable to eat certain animals from…

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    Killer Whale Stereotypes

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    The killer whale or orca is another name for species Orcinus orca. It is a toothed whale that belongs to the family Delphinidae in the order Cetacea.. They are found globally in all oceans. In fact, after man they are the most widespread mammal in the world. Killer whales live in pods. The structure of the pods are usually matrilineal. This means that the offspring wait with their mother throughout life.The individuals in a matrilineal group travel closely together. The killer whale worldwide…

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    that wish to do whales harm. The process of whaling has been around since about 800 A.D. whales were hunted for their meat, oils and bones. They were also turned into shoe polishes, margarines, dog foods, and tennis racket strings. Coastal species in Europe, and then in North America declined to an extremely low level. Species such as the humpback, fin, right, blue, sei, bowhead, and the sperm whales were hunted to the brink of extinction due to the increase in demand (Lang “Detailed…

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    The Importance Of Whales

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    Has anyone ever thought about what the ocean would be like without whales? One thing that is never thought about when whales are being hunted is how important they are. For humans to understand the purpose of the whale and just going off the information one has learned may be different. Understanding the whale may be more complex than thought out to be. There is more to know about whales other than they can be big intimidating creatures. It is important to make sure whales are being protected.…

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    Whaling has been a controversial activity for some years now. Whales in today’s society have been regarded as “gentle giants” and highly intelligent animals, which is true. Some nations however, such as the Norwegian and Japanese have whaling deeply rooted in their culture and history. For many centuries, their ancestors took part in whaling as a means to sustain their life, livelihood and culture. I agree with the Norwegian and Japanese position on permitting the hunting of non-endangered…

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    Industrial Whaling Essay

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    The practice of hunting whales and harvesting the beached whales dates back to at least 3000 B.C. Industrial Whaling dates back to the 17th century, The Dutch and the English maintained large whaling fleets. Whalers began hunting further away from home as whale numbers fell. By the 19th century America was the leader of the whaling industry. Part of the modernization of the whaling industry was the invention of the factory ship. These were enormous self-sufficient ships that processed the…

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    Orca Dolphins Essay

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    ORCA WHALES Did you know that people have developed sonar because of studying how orcas detect things using a series of clicking that they send out through their melon, or that orca’s skin grows 290 times faster than skin on your arm (Throp)? You can learn about many more things by studying orca whales. These are only a few things about orcas that have been studied; the appearance of orcas, how they hunt, and their relationship with dolphins. Orcas detect things using clicking noises that they…

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    Blue Whales, the largest animals in the world so far, are facing with the situation of being extinct, as they have been harvested for a long time, making the population decrease to 50,000. In the early 20 century, people took up whaling for the energy sources, and the meat and fat of whales can be used in different ways. Since the price of whale meat is really high, many people regard the profit as the chief motivation, caring less about the ecological system. There were about 66000 whales…

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