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Dolphins are Not Fish Featuring the Bottlenose Dolphin. By Stephen Schutz. |
A dolphin and a school of tiny fish swim underwater. |
Did you know that dolphins are not fish? They are different from fish in many ways. | A pod of ten dolphins swimming underwater. |
Dolphins must come up to the surface to breathe. Fish can breathe under the water. | A dolphin rising towards the surface. |
Dolphins have one blowhole. They breathe in and out through it. Fish do not have blowholes. | You can clearly see a blowhole on top of the dolphin's head. |
Dolphins move their tails up and down when they swim. Fish move their tails from side to side. | Image sequence shows a dolphin swinging his tail up and down. Another series shows a fish moving his tail from side to side. |
Dolphins have smooth skin. A fish's skin is not smooth. | Two girls smile as they stroke a friendly dolphin's skin. A close-up of a fish showing its scales. |
Dolphins are mammals. A mother dolphin nurses her calf. Fish are not mammals. | A mother dolphin with her calf, just beneath her. |
Dolphins see objects by making sounds and listening for an echo. This is called echolocation. Fish cannot do this. | Diagram shows lines representing sound waves. These are emitted from the dolphin and bounce back. |
Dolphins are playful. They like to swim in the bow waves of ships. Fish do not do this. | A dolphin jumps in front of a huge, fast-moving ship. |
Dolphins are very smart. Some learn to do tricks. Fish don't appear to be as smart. | A dolphin jumps over two swimmers. |
Now you know why dolphins are not fish. | Three dolphins jump high out of the sea. |