What is the difference in an Atlantic dolphin and a Pacific dolphin other than location of habitat?
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salt water and fresh water.
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Polar bears are in the Arctic.  Penguins are Antarctic, in the lower hemisphere.
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They are mammals, so they have lungs and can not absorb enough oxygen to survive.  Dolphins evolve from a land animal that return to the sea.  There is a belief that dolphins can absorb oxygen from the sea, but because they are warm blooded, they require large amount of oxygen, which sea water can't provide. Many warm blooded animals evolve to become sea creature, because of the abundents of food.  Warm blooded animals are smarter and in some ways faster than cold water animals, gave an incentive for some species to become sea creatures.  Warm blooded animals though require large quantity of oxygen to run its supercharged matabolism, which why fish never evolve into being warm blooded.
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It will vary from dolphin to dolphin. Certain dolphins will prefer different rewards over others. That is why dolphin trainers learn the personalities of the dolphins to see what they like as a reinforcement. Just like dogs, they preference over certain things.
67256
Kind of -- at least, they live in different hemispheres. Polar bears live in the Arctic, in the northern hemisphere; Penguins live in the Antarctic and a few other parts of the southern hemisphere. They do not all live near the south pole, however -- Galapagos penguins are actually quite close to the equator.
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Sharks normally swim or live at a much deeper depth than dolphins. They do tend to share the same waters as far as proximity, although they do not get along very well.
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Adults range in length from 2 to 4m (6 to 13 feet) and in weight from 150 to 650kg (330 to 1430 pounds) with males being slightly longer and considerably heavier than females on average. The size of the dolphin appears to vary considerably with habitat. Most research in this area has been restricted to the North Atlantic Ocean, where researchers (Hersh and Duffield, 1990) have identified two ecotypes. Those dolphins in warmer, shallower waters tend to have a smaller body than their cousins in cooler pelagic waters. For example a survey of animals in the Moray Firth in Scotland, the world's northernmost resident population, recorded an average adult length of just under 4m (13 feet). This compares with a 2.5m (8 feet) average in a population off Florida. Those in colder waters also have a fattier composition and blood more suited to deep-diving.
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Oceanic currents are part of the global system of circulation that distributes the Sun's energy (including warmth) in the planet. Just like the wind currents transport warmer and colder air masses, oceanic currents distribute colder water from the poles to lower latitudes (cold currents are usually deep because cold water sinks under warmer water masses), and warm water from intertropical areas gets transported to higher latitudes (surface currents). \nOceanic currents also differ in their salinity (salt concentration) levels, which is also very important for aquatic organisms as well as for the global circulation, because salinity affects the freezing point of water. Therefore, oceanic currents affect the normal formation of ice, which also affects neighboring land masses and in turn alters the global circulation. \n\nThe influence of oceanic currents is especially important in coastal areas, but the amounts of energy transported by oceanic currents equals the transport by wind currents, and can affect temperature/precipitation balances throughout the world. El Niño (it's complete name is ENSO - El Niño Southern Oscillation) is a good example of the way a change in an oceanic current can alter land climate, e.g. causing droughts.\nAnother example is the Gulf Stream which "warms up" the North Atlantic Ocean and northeaster Europe.\n\nAbout the El Niño-La Niña cycle (ENSO):\nhttp://www.cdc.noaa.gov/ENSO/
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The seas, ocaena, rivers, and lakes of the world are all composed of similar material to different degrees. For example the Atlantic, Pacific and Indian Ocean all have different amounts of salt in them. When the Panama canal was built a division between the regions was seen. Not so much with eyes but with equipment. True, those who named regions of water may not have had any idea that they were slightly different but they are. On a ship it'll be pretty hard to tell which ocean you're in if you awoke from a concussion and just stared out at sea. Maritime borders are only used as a political tool. Every second some of teh ATlantic mixes with the Pacific and vice versa.
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Penguins, bears and seals. Whales. That is a consensus. As for the flaura, lichen ... try looking the remainder up.
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They are part of the food chain for many species, whether it be at the beginning or in the middle. If dolphins disappeared, certain species would become over populated, and others would die off.
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Check a aquarium. Also, you can check the Internet and if you live near the coast, there is probably going to be some sort of research center nearby that would have people who know a lot of stuff about dolphins.\nCheck www.dolphins.org\nIt's a dolphin research center, I think.
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The East Coast is relatively warmer than the West Coast.\nThus being more conducive to crustacean / mollusck habitation at sea
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Jenny Joanna is right.  Higher humidity, air more dense, better transmission of sound waves.\n\nGo to the extreme, whales can communicate hundreds of miles through the ocean.
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At the time of the first survey in 2001, the dolphins, which are endemic to Pakistan and already listed by the International Union for Conservation of Nature (IUCN) as a 'most threatened' species, had a population of only 1,100.\n\nYou will find more details at this link:\n\nhttp://science.monstersandcritics.com/features/article_1153678.php/Pakistan_wildlife_surveys_Indus_Blind_dolphin
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All species of dolphins use sound for echolocation. Using their melon (the bulbous portion of their forehead), they create a sound that bounces off objects around them. The returning echo of the sound gives the dolphin information about the location and physical description of the object. I don't know much about the actual workings of the brain though, but I do know that the dolphins sonar is much more advanced than human technology and can pin point exact information about it's surroundings ranging from size, distance and even the nature of the object. Dolphin Speech is so complex that the sounds even cross the species barriers and enable different kinds of dolphins to communicate.  They have been known to instruct each other as well as receive instructions and act accordingly.
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There are a number of currents in the ocean in which the water temperature is different from the surrounding area.  The most famous of these is the Gulf Stream that brings warm water from the tropic areas north off the East Coast of the United States and then across the Atlantic to Europe.\n\nNote that this movement is clockwise if you look at it from space.  Of course, this also means that on the other side of the ocean, cold water will move south to complete the circuit.\n\nNow we go to California.  There is a cold current called the California current that brings water from the area off Alaska in the same manner.  This cold water is also full of nutrients which is why there are the kelp forest and abundant wildlife.  It moves in the same manner as the Atlantic Ocean example.\n\nHope this answers your question.