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.
a dolphins dorsal fin is rounded at the top and sharks are straight. hope i helped:)
A shark is not an air breathing mammal, and is a fish that breaths through gills. There are many other differences between the two.
Shark is to fish dolphin is to mammal.
No! A dolphin is a mammal, a shark is a fish - never the twain shall meet!
dolphin
Shark are fish and breath water Dolphin are mammals and breath air.
A shark and a dolphin fish.
a great white shark is a fish and a bottle nose dolphin is not
No, the Great White shark is a fish, and dolphins are mammals.
Shark, dolphin and whales are mammals and they give birth to their babies.
no, sharks are totally different than whales and dolphins because sharks are fish, not mammals like a dolphin or a whale.
The dolphin is a mammal.
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.
yes it can.