what are the differences between dolphins and sharks?
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The first difference between sharks and dolphins is the type of animal they are — sharks are fish while dolphins are mammals (like us). ... Sharks' tail fins are vertical and they use them in a side-to-side motion to swim, while dolphins' tails are horizontal and they use them in an up-and-down motion to swim.
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Swordfish are ectothermic animals; however, along with some species of sharks, they have special organs next to their eyes to heat their eyes and brains. ... These include the swordfish, marlin, tuna, and some sharks.
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The pectoral fins of fishes and flippers of dolphins are analogous organs. They have different structure but perform the same function of swimming.
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Sharks like to eat animals that are smaller than them - they particularly like to eat young (baby) dolphins. ... The dolphin will swim very fast and ram the shark so hard that it dies. As such, sharks have good reason to be scared of dolphins.
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Like every mammal, dolphins are warm blooded. ... Whales and porpoises are also mammals. There are 75 species of dolphins, whales, and porpoises living in the ocean. They are the only mammals, other than manatees, that spend their entire lives in the water.
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Whales, along with dolphins and porpoises, are warm-blooded mammals and breathe air like humans do. There are some significant differences between whales and fish: Whales are warm blooded. Fish are cold blooded.
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1. Alligators and Crocodiles Have Different Snouts. One of the main differences between alligators and crocodiles is the snout. The alligator's is broader and shaped like a U, whereas the crocodile's is longer and narrower and more V-shaped.
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Hydrodynamicly they are about even and both are accomplished swimmers but the fastest dolphin is the orca at 35 mph and the fastest shark is the mako at 42 mph. The mako uses a lot of dolphin like adaptations to achieve that speed such as warm blood and a homocercal caudal fin.
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Are sharks warm or cold blooded? Most sharks, like most fishes, are cold blooded, or ectothermic. Their body temperatures match the temperature of the water around them. ... The white shark is able to maintain its stomach temperature as much as 57ºF (14ºC) warmer than the ambient water temperature.
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Dolphins are extraordinarily intelligent animals who also display culture, something which was long-believed to be unique to humans (although now recognised in various species). ... Dolphins are altruistic animals. They are known to stay and help injured individuals, even helping them to the surface to breath.
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Blacktip sharks are generally stockier than spinner sharks, with a shorter snout and a dorsal fin that starts slightly before the rear margin of the pectoral fins. Spinners are generally more streamlined, have shorter pectoral fins, and have a dorsal fin that originates behind the rear margin of the pectoral fins.
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Sharks are fish. They live in water, and use their gills to filter oxygen from the water. Sharks are a special type of fish known because their body is made out of cartilage instead of bones like other fish.
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Contrary to popular belief, however, sharks are not attracted to human blood. A shark is more likely to be attracted to a bleeding fish or sea lion than a human being with a cut in the ocean.
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These markings disappear as they mature. Their needle-like teeth are highly adapted for impaling fish, their main prey. Their teeth are long, narrow, and very sharp with smooth edges, with one and on occasion two smaller cusplets on either side. Sand sharks have a large second dorsal fin.
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Whales sharks are the largest fish in the world. They are not whales; they are sharks. They have a lot in common with whales, though.
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Most sharks are cold-blooded. Some, like the Mako and the Great white shark, are partially warm-blooded (they are endotherms). These sharks can raise their temperature about the temperature of the water; they need to have occasional short bursts of speed in hunting.
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Some sharks lay eggs (oviparous), while some give birth to live offspring (viviparous) and yet others have eggs that hatch in the uterus (ovoviviparous). Mantas are in that group that gives birth to live offspring, but unlike most viviparous sharks and rays, its one baby at a time and what a baby!