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a dolphin can only swim up and down because its muscle structure and it spine are designed that way, if a dolphin were to swim side to side the muscle near its tail would swell damaging the spine if a shark or fish were to swim like a dolphin the same thing would happen eventually resulting in death.

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11y ago
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13y ago

a dolphins dorsal fin is rounded at the top and sharks are straight. hope i helped:)

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8y ago

A shark is not an air breathing mammal, and is a fish that breaths through gills. There are many other differences between the two.

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Q: Why is a shark like a dolphin but not like a fish?
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Related questions

Shark is to fish dolphin is to?

Shark is to fish dolphin is to mammal.


Can there be a dolphin shark?

No! A dolphin is a mammal, a shark is a fish - never the twain shall meet!


Shark is to whale as fish is to what?

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How do you tell a shark from a dolphin?

Shark are fish and breath water Dolphin are mammals and breath air.


What kind of animal eat porcupine fish?

A shark and a dolphin fish.


What is the difference between a great white shark and a bottlenose dolphin?

a great white shark is a fish and a bottle nose dolphin is not


Is a great white shark a dolphin?

No, the Great White shark is a fish, and dolphins are mammals.


What is the clasification for a shark?

Shark, dolphin and whales are mammals and they give birth to their babies.


Is a shark dolphin and whale in the same family?

no, sharks are totally different than whales and dolphins because sharks are fish, not mammals like a dolphin or a whale.


What is the odd one out of barracuda tuna sailfish shark or dolphin?

The dolphin is a mammal.


What is the difference between a dolphin and a shark?

A shark is considered a fish. A dolphin is a mammal. While both may be considered aquatic with living in water, both are different in that respect. The mammals breathe air and produce milk for their offspring.


Can a dolphin look like a shark?

yes it can.