Dolphins are mammals closely related to whales and porpoises. Dolphins have a powerful and streamlined body. They are found in all seas and oceans. Dolphins can be told apart from porpoises by their nose‚ which is beaklike‚ and also their conical teeth. Porpoises have a flatter nose‚ sharper teeth‚ and a more solid body. There are 32 known species of dolphins. The bottle- nosed dolphin is often the species used in aquatic shows. The common dolphin inspired many Mediterranean folk lores. Both
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tonnes (9.8 long tons; 11 short tons) (the orca or killer whale). They are found worldwide‚ mostly in the shallower seas of the continental shelves and are carnivores‚ eating mostly fish and squid. The family Delphinidae‚ the largest in the order Cetacea‚ evolved relatively recently‚ about ten million years ago during the Miocene.he name is originally from Greek δελφίς (delphís)‚ "dolphin"‚[1] which was related to the Greek δελφύς (delphus)‚ "womb".[2] The animal ’s name can therefore be interpreted
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Whale (origin Old English hwael)[2] is the common name for any large marine mammal of the order Cetacea‚ which have forelimbs modified as fins‚ a tail with horizontal flukes‚ and nasal openings on top of the head.[2] The term whale is sometimes used to refer to all cetaceans‚ but in more common usage it generally excludes those members of the Delphinoidea superfamily which are known as dolphins and porpoises.[3] These smaller species belong to the suborder Odontoceti (toothed whales)‚ which also
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1. Gather information from secondary sources (including photos/diagrams/models) to observe‚ analyse and compare the structure of vertebrate forelimbs. Comparative anatomy is the study of the differences and similarities in structure between different organisms. An example of comparative anatomy is the pentadactyl limb which is the basic five-digit bone structure of many vertebrate’s forelimbs. The vertebrate forelimb (or the pentadactyl limb) comprises of the humerus (upper arm)‚ radius and ulna
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during the Miocene. There has been a trend within mammalian evolution towards colonization of land‚ however in some instances this trend has been reversed; there are three large orders of mammals that have separately re-adapted to marine life‚ the Cetacea (whales‚ dolphins and porpoises)‚ the Pinnipedia (seals‚ sea lions and walruses)‚ and the Sirenia (dugongs‚ sea cows and manatees). This “re-adaptation” is most extreme in the cetaceans which have evolved a totally fish-like form‚ masking their true
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Dolphins are well-known‚ lovable‚ and incredibly intelligent creatures. One genus of dolphins‚ known as Tursiops or Bottlenose‚ are quite commonly known to the common person (Bottlenose). Bottlenose dolphins are known for their intelligence and popularity with children especially. Many people know what they are and are able to recognize them easily. Scientists have proven that they are incredibly intelligent and know a lot about various things that humans also know (Common). However‚ many people
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meaning “name of a large sea fish of the porpoise kind” to pay respect to the Aborigines that were on her research team. The Burrunan dolphin falls under the Kingdom Animalia‚ referring to animals‚ Class Mammalia which is describing mammals‚ Order Cetacea is known as marine mammals‚ Family Delphinidae classifies oceanic dolphins‚ and finally‚ Genus Tursiops is used to represent bottlenose dolphins as a
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from 1.2 m (4 ft) and 40 kg (90 lb)‚ up to 9.5 m (30 ft) and 10 tonnes. They are found worldwide‚ mostly in the shallower seas of the continelnta shelves‚ and are carnivores‚ mostly eating fish and squid. The family Delphinidae is the largest in the Cetacea‚ and relatively recent: dolphins evolved about ten million years ago‚ during the Miocene. Dolphins are considered to be amongst the most intelligent of animals and their often friendly appearance and seemingly playful attitude have made them popular
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The Causes and Effects of Whaling 1 The Causes and Effects of Whaling Whale is the current name for diverse marine mammals of the order Cetacea‚ having the general shape of a fish with forelimbs modified as fins‚ a tail with level flukes‚ and one or two blowholes on top of the head. (“Whale”‚ 2010). Whaling dates back to prehistoric times‚ but it became an important industry in the nineteenth century. Whales have been hunted for meat or made into lighting oil. Until the international injunction
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A Dolphin Organism Evolves Anthony Youmans BIO/101 Pamela Buckman April 13‚ 2013 Kingdom: Anamalia‚ Phylum: Cordata‚ Class: Mammalia‚ Order: Cetacea‚ Sub-order: Odontoceti‚ Family: Delphinidae‚ Genus: Delphinus‚ Species: Delphi’s‚ or better known as‚ Dolphin. Dolphins occupy all oceans and major seas‚ even some are in larger river systems. This paper will cover characteristics of a dolphin‚ the ancestry to the modern dolphin‚ and what adaptations the dolphin has gone through to be the survivor
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